On the Trinity; doctrinal and moral treatises

15. But in their mutual relation to one another in the Trinity itself, if the begetter is a beginning in relation to that which he begets, the Father is a beginning in relation to the Son, because He begets Him; but whether the Father is also a beginning in relation to the Holy Spirit, since it is said, "He proceeds from the Father," is no small question. Because, if it is so, He will not only be a beginning to that thing which He begets or makes, but also to that which He gives. And here, too, that question comes to light, as it can, which is wont to trouble many, Why the Holy Spirit is not also a son, since He, too, comes forth from the Father, as it is read in the Gospel.¹ For the Spirit came forth, not as born, but as given; and so He is not called a son, because He was neither born, as the Only-begotten, nor made, so that by the grace of God He might be born into adoption, as we are. For that which is born of the Father, is referred to the Father only when called Son, and so the Son is the Son of the Father, and not also our Son; but that which is given is referred both to Him who gave, and to those to whom He gave; and so the Holy Spirit is not only the Spirit of the Father and of the Son who gave Him, but He is also called ours, who have received Him: as "The salvation of the Lord,"² who gives salvation, is said also to be our salvation, who have received it. Therefore, the Spirit is both the Spirit of God who gave Him, and ours who have received Him. Not, indeed, that spirit of ours by which we are, because that is the spirit of a man which is in him; but this Spirit is ours in another mode, viz. that in which we also say, "Give us this day our bread."³ Although certainly we have received that spirit also, which is called the spirit of a man. "For what hast thou," he says, "which thou didst not receive?"⁴ But that is one thing, which we have received that we might be; another, that which we have received that we might be holy. Whence it is also written of John, that he "came in the spirit and power of Elias;"⁵ and by the spirit of Elias is meant the Holy Spirit, whom Elias received. And the same thing is to be understood of Moses, when the Lord says to him, "And I will take of thy spirit, and will put it upon them;"⁶ that is, I will give to them of the Holy Spirit, which I have already given to thee. If, therefore, that also which is given has him for a beginning by whom it is given, since it has received from no other source that which proceeds from him; it must be admitted that the Father and the Son are a Beginning of the Holy Spirit, not two Beginnings; but as the Father and Son are one God, and one Creator, and one Lord relatively to the creature, so are they one Beginning relatively to the Holy Spirit. But the Father, the Son, and the Holy Spirit is one Beginning in respect to the creature, as also one Creator and one God.⁷

16. But it is asked further, whether, as the Son, by being born, has not only this, that He is the Son, but that He is absolutely; and so also the Holy Spirit, by being given, has not only this, that He is given, but that He is absolutely—whether therefore He was, before He was given, but was not yet a gift; or whether, for the very reason that God was about to give Him, He was already a gift also before He was given. But if He does not proceed unless when He is given, and assuredly could not proceed before there was one to whom He might be given; how, in that case, was He [absolutely] in His very substance, if He is not unless because He is given? just as the Son, by being born, not only has this, that He is a Son, which is said relatively, but His very substance absolutely, so that He is. Does the Holy Spirit proceed always, and proceed not in time, but from eternity, but because He so proceeded that He was capable of being given, was already a gift even before there was one to whom He might be given? For there is a difference in meaning between a gift and a thing that has been given. For a gift may exist even before it is given; but it cannot be called a thing that has been given unless it has been given.

17. Nor let it trouble us that the Holy Spirit, although He is co-eternal with the Father and the Son, yet is called something which exists in time; as, for instance, this very thing which we have called Him, a thing that has been given. For the Spirit is a gift eternally, but a thing that has been given in time. For if a lord also is not so called unless when he begins to have a slave, that appellation likewise is relative and in time to God; for the creature is not from all eternity, of which He is the Lord. How then shall we make it good that relative terms themselves are not accidental, since nothing happens accidentally to God in time, because He is incapable of change, as we have argued in the beginning of this discussion? Behold! to be the Lord, is not eternal to God; otherwise we should be compelled to say that the creature also is from eternity, since He would not be a lord from all eternity unless the creature also was a servant from all eternity. But as he cannot be a slave who has not a lord, neither can he be a lord who has not a slave. And if there be any one who says that God, indeed, is alone eternal, and that times are not eternal on account of their variety and changeableness, but that times nevertheless did not begin to be in time (for there was no time before times began, and therefore it did not happen to God in time that He should be Lord, since He was Lord of the very times themselves, which assuredly did not begin in time): what will he reply respecting man, who was made in time, and of whom assuredly He was not the Lord before he was of whom He was to be Lord? Certainly to be the Lord of man happened to God in time. And that all dispute may seem to be taken away, certainly to be your Lord, or mine, who have only lately begun to be, happened to God in time. Or if this, too, seems uncertain on account of the obscure question respecting the soul, what is to be said of His being the Lord of the people of Israel? since, although the nature of the soul already existed, which that people had (a matter into which we do not now inquire), yet that people existed not as yet, and the time is apparent when it began to exist. Lastly, that He should be Lord of this or that tree, or of this or that corn crop, which only lately began to be, happened in time; since, although the matter itself already existed, yet it is one thing to be Lord of the matter (materiæ), another to be Lord of the already created nature (naturæ).⁸ For man, too, is lord of the wood at one time, and at another he is lord of the chest, although fabricated of that same wood; which he certainly was not at the time when he was already the lord of the wood. How then shall we make it good that nothing is said of God according to accident, except because nothing happens to His nature by which He may be changed, so that those things are relative accidents which happen in connection with some change of the things of which they are spoken. As a friend is so called relatively: for he does not begin to be one, unless when he has begun to love; therefore some change of will takes place, in order that he may be called a friend. And money, when it is called a price, is spoken of relatively, and yet it was not changed when it began to be a price; nor, again, when it is called a pledge, or any other thing of the kind. If, therefore, money can so often be spoken of relatively with no change of itself, so that neither when it begins, nor when it ceases to be so spoken of, does any change take place in that nature or form of it, whereby it is money; how much more easily ought we to admit, concerning that unchangeable substance of God, that something may be so predicated relatively in respect to the creature, that although it begin to be so predicated in time, yet nothing shall be understood to have happened to the substance itself of God, but only to that creature in respect to which it is predicated? "Lord," it is said, "Thou hast been made our refuge."⁹ God, therefore, is said to be our refuge relatively, for He is referred to us, and He then becomes our refuge when we flee to Him; pray does anything come to pass then in His nature, which, before we fled to Him, was not? In us therefore some change does take place; for we were worse before we fled to Him, and we become better by fleeing to Him: but in Him there is no change. So also He begins to be our Father, when we are regenerated through His grace, since He gave us power to become the sons of God.¹⁰ Our substance therefore is changed for the better, when we become His sons; and He at the same time begins to be our Father, but without any change of His own substance. Therefore that which begins to be spoken of God in time, and which was not spoken of Him before, is manifestly spoken of Him relatively; yet not according to any accident of God, so that anything should have happened to Him, but clearly according to some accident of that, in respect to which God begins to be called something relatively. When a righteous man begins to be a friend of God, he himself is changed; but far be it from us to say, that God loves any one in time with as it were a new love, which was not in Him before, with whom things gone by have not passed away and things future have been already done. Therefore He loved all His saints before the foundation of the world, as He predestinated them; but when they are converted and find them; then they are said to begin to be loved by Him, that what is said may be said in that way in which it can be comprehended by human affections. So also, when He is said to be wroth with the unrighteous, and gentle with the good, they are changed, not He: just as the light is troublesome to weak eyes, pleasant to those that are strong; namely, by their change, not its own.

1. Somethink themselves hindered from admitting the equality of the Father, Son, and Holy Spirit, because it is written, "Christ, the power of God, and the wisdom of God;" in that, on this ground, there does not appear to be equality; because the Father is not Himself power and wisdom, but the begetter of power and wisdom. And, in truth, the question is usually asked with no common earnestness, in what way God can be called the Father of power and wisdom. For the apostle says, "Christ the power of God, and the wisdom of God."¹¹ And hence some on our side have reasoned in this way against the Arians, at least against those who at first set themselves up against the Catholic faith. For Arius himself is reported to have said, that if He is a Son, then He was born; if He was born, there was a time when the Son was not: not understanding that even to be born is, to God, from all eternity; so that the Son is co-eternal with the Father, as the brightness which is produced and is spread around by fire is co-eval with it, and would be co-eternal, if fire were eternal. And therefore some of the later Arians have abandoned that opinion, and have confessed that the Son of God did not begin to be in time. But among the arguments which those on our side used to hold against them who said that there was a time when the Son was not, some were wont to introduce such an argument as this: If the Son of God is the power and wisdom of God, and God was never without power and wisdom, then the Son is co-eternal with God the Father; but the apostle says, "Christ the power of God, and the wisdom of God;" and a man must be senseless to say that God at any time had not power or wisdom; therefore there was no time when the Son was not.

2. Now this argument compels us to say that God the Father is not wise, except by having the wisdom which He begat, not by the Father in Himself being wisdom itself. Further, if it be so, just as the Son also Himself is called God of God, Light of Light, we must consider whether He can be called wisdom of wisdom, if God the Father is not wisdom itself, but only the begetter of wisdom. And if we hold this, why is He not the begetter also of His own greatness, and of His own goodness, and of His own eternity, and of His own omnipotence; so that He is not Himself His own greatness, and His own goodness, and His own eternity, and His own omnipotence; but is great with that greatness which He begat, and good with that goodness, and eternal with that eternity, and omnipotent with that omnipotence, which was born of Him; just as He Himself is not His own wisdom, but is wise with that wisdom which was born of Him? For we need not be afraid of being compelled to say that there are many sons of God, over and above the adoption of the creature, co-eternal with the Father, if He be the begetter of His own greatness, and goodness, and eternity, and omnipotence. Because it is easy to reply to this cavil, that it does not at all follow, because many things are named, that He should be the Father of many co-eternal sons; just as it does not follow that He is the Father of two sons, because Christ is said to be the power of God, and the wisdom of God. For that certainly is the power which is the wisdom, and that is the wisdom which is the power; and in like manner, therefore, of the rest also; so that that is the greatness which is the power, or any other of those things which either have been mentioned above, or may hereafter be mentioned.

3. But if nothing is spoken of the Father as such, except that which is spoken of Him in relation to the Son, that is, that He is His father, or begetter, or beginning; and if also the begetter is by consequence a beginning to that which he begets of himself; but whatever else is spoken of Him is so spoken as with the Son, or rather in the Son; whether that He is great with that greatness which He begat, or just with that justice which He begat, or good with that goodness which He begat, or powerful with that force or power which He begat, or wise with that wisdom which He begat: yet the Father is not said to be greatness itself, but the begetter of greatness; but the Son, as He is called the Son as such, is not so called with the Father but in relation to the Father, so is not great in and by himself, but with the Father, of whom He is the greatness; and so also is called wise with the Father, of whom He Himself is the wisdom; just as the Father is called wise with the Son, because He is wise with that wisdom which He begat; therefore the one is not called without the other, whatever they are called in respect to themselves; that is, whatever they are called that manifests their essential nature, both are so called together;—if these things are so, then the Father is not God without the Son, nor the Son God without the Father, but both together are God. And that which is said, "In the beginning was the Word," means that the Word was in the Father. Or if "In the beginning" is intended to mean, Before all things; then in that which follows, "And the Word was with God," the Son alone is understood to be the Word, not the Father and Son together, as though both were one Word (for He is the Word in the same way as He is the Image, but the Father and Son are not both together the Image, but the Son alone is the Image of the Father: just as He is also the Son of the Father, for both together are not the Son). But in that which is added, "And the Word was with God," there is much reason to understand thus: "The Word," which is the Son alone, "was with God," which is not the Father alone, but God the Father and the Son together.¹² But what wonder is there, if this can be said in the case of some twofold things widely different from each other? For what are so different as soul and body? Yet we can say the soul was with a man, that is, in a man; although the soul is not the body, and man is both soul and body together. So that what follows in the Scripture, "And the Word was God,"¹³ may be understood thus: The Word, which is not the Father, was God together with the Father. Are we then to say thus, that the Father is the begetter of His own greatness, that is, the begetter of His own power, or the begetter of His own wisdom; and that the Son is greatness, and power, and wisdom; but that the great, omnipotent, and wise God, is both together? How then God of God, Light of Light? For not both together are God of God, but only the Son is of God, that is to say, of the Father; nor are both together Light of Light, but the Son only is of Light, that is, of the Father. Unless, perhaps, it was in order to intimate and inculcate briefly that the Son is co-eternal with the Father, that it is said, God of God, and Light of Light, or anything else of the like kind: as if to say, This which is not the Son without the Father, of this which is not the Father without the Son; that is, this Light which is not Light without the Father, of that Light, viz. the Father, which is not Light without the Son; so that, when it is said, God which is not the Son without the Father, and of God which is not the Father without the Son, it may be perfectly understood that the Begetter did not precede that which He begot. And if this be so, then this alone cannot be said of them, namely, this or that of this or that, which they are not both together. Just as the Word cannot be said to be of the Word, because both are not the Word together, but only the Son; nor image of image, since they are not both together the image; nor Son of Son, since both together are not the Son, according to that which is said, "I and my Father are one."¹⁴ For "we are one" means, what He is, that am I also; according to essence, not according to relation.

4. And I know not whether the words, "They are one," are ever found in Scripture as spoken of things of which the nature is different. But if there are more things than one of the same nature, and they differ in sentiment, they are not one, and that so far as they differ in sentiment. For if the disciples were already one by the fact of being men, He would not say, "That they may be one, as we are one,"¹⁵ when commending them to the Father. But because Paul and Apollos were both alike men, and also of like sentiments, "He that planteth," he says, "and he that watereth are one."¹⁶ When, therefore, anything is so called one, that it is not added in what it is one, and yet more things than one are called one, then the same essence and nature is signified, not differing nor disagreeing. But when it is added in what it is one, it may be meant that something is made one out of things more than one, though they are different in nature. As soul and body are assuredly not one; for, what are so different? unless there be added, or understood in what they are one, that is, one man, or one animal [person]. Thence the apostle says, "He who is joined to a harlot, is one body;" he does not say, they are one or he is one; but he has added "body," as though it were one body composed by being joined together of two different bodies, masculine and feminine.¹⁷ And, "He that is joined unto the Lord," he says," is one spirit:" he did not say, he that is joined unto the Lord is one, or they are one; but he added, "spirit." For the spirit of man and the Spirit of God are different in nature; but by being joined they become one spirit of two different spirits, so that the Spirit of God is blessed and perfect without the human spirit, but the spirit of man cannot be blessed without God. Nor is it without cause, I think, that when the Lord said so much in the Gospel according to John, and so often, of unity itself, whether of His own with the Father, or of ours interchangeably with ourselves; He has nowhere said, that we are also one with Himself, but, "that they maybe one as we also are one."¹⁸ Therefore the Father and the Son are one, undoubtedly according to unity of substance; and there is one God, and one great, and one wise, as we have argued.

5. Whence then is the Father greater? For if greater, He is greater by greatness; but whereas the Son is His greatness, neither assuredly is the Son greater than He who begat Him, nor is the Father greater than that greatness, whereby He is great; therefore they are equal. For whence is He equal, if not in that which He is, to whom it is not one thing to be, and another to be great? Or if the Father is greater in eternity, the Son is not equal in anything whatsoever. For whence equal? If you say in greatness, that greatness is not equal which is less eternal, and so of all things else. Or is He perhaps equal in power, but not equal in wisdom? But how is that power which is less wise, equal? Or is He equal in wisdom, but not equal in power? But how is that wisdom equal which is less powerful? It remains, therefore, that if He is not equal in anything, He is not equal in all. But Scripture proclaims, that "He thought it not robbery to be equal with God."¹⁹ Therefore any adversary of the truth whatever, provided he feels bound by apostolical authority, must needs confess that the Son is equal with God in each one thing whatsoever. Let him choose that which he will; from it he will be shown, that He is equal in all things which are said of His substance.

6. For in like manner the virtues which are in the human mind, although each has its own several and different meaning, yet are in no way mutually separable; so that, for instance, whosoever were equal in courage, are equal also in prudence, and temperance, and justice. For if you say that such and such men are equal in courage, but that one of them is greater in prudence, it follows that the courage of the other is less prudent, and so neither are they equal in courage, since the courage of the former is more prudent. And so you will find it to be the case with the other virtues, if you consider them one by one. For the question is not of the strength of the body, but of the courage of the mind. How much more therefore is this the case in that unchangeable and eternal substance, which is incomparably more simple than the human mind is? Since, in the human mind, to be is not the same as to be strong, or prudent, or just, or temperate; for a mind can exist, and yet have none of these virtues. But in God to be is the same as to be strong, or to be just, or to be wise, or whatever is said of that simple multiplicity, or multifold simplicity, whereby to signify His substance. Wherefore, whether we say God of God in such way that this name belongs to each, yet not so that both together are two Gods, but one God; for they are in such way united with each other, as according to the apostle's testimony may take place even in diverse and differing substances; for both the Lord alone is a Spirit, and the spirit of a man alone is assuredly a spirit; yet, if it cleave to the Lord, "it is one spirit:" how much more there, where there is an absolutely inseparable and eternal union, so that He may not seem absurdly to be called as it were the Son of both, when He is called the Son of God, if that which is called God is only said of both together. Or perhaps it is, that whatever is said of God so as to indicate His substance, is not said except of both together, nay of the Trinity itself together? Whether therefore it be this or that (which needs a closer inquiry), it is enough for the present to see from what has been said, that the Son is in no respect equal with the Father, if He is found to be unequal in anything which has to do with signifying His substance, as we have already shown. But the apostle has said that He is equal. Therefore the Son is equal with the Father in all things, and is of one and the same substance.

7. Wherefore also the Holy Spirit consists in the same unity of substance, and in the same equality. For whether He is the unity of both, or the holiness, or the love, or therefore the unity because the love, and therefore the love because the holiness, it is manifest that He is not one of the two, through whom the two are joined, through whom the Begotten is loved by the Begetter, and loves Him that begat Him, and through whom, not by participation, but by their own essence, neither by the gift of any superior, but by their own, they are "keeping the unity of the Spirit in the bond of peace;"²⁰ which we are commanded to imitate by grace, both towards God and towards ourselves. "On which two commandments hang all the law and the prophets."²¹ So those three are God, one, alone, great, wise, holy, blessed. But we are blessed from Him, and through Him, and in Him; because we ourselves are one by His gift, and one spirit with Him, because our soul cleaves to Him so as to follow Him. And it is good for us to cleave to God, since He will destroy every man who is estranged from Him. Therefore the Holy Spirit, whatever it is, is something common both to the Father and Son. But that communion itself is consubstantial and co-eternal; and if it may fitly be called friendship, let it be so called; but it is more aptly called love. And this is also a substance, since God is a substance, and "God is love," as it is written.²² But as He is a substance together with the Father and the Son, so that substance is together with them great, and together with them good, and together with them holy, and whatsoever else is said in reference to substance; since it is not one thing to God to be, and another to be great or to be good, and the rest, as we have shown above. For if love is less great therein [i.e. in God] than wisdom, then wisdom is loved in less degree than according to what it is; love is therefore equal, in order that wisdom may be loved according to its being; but wisdom is equal with the Father, as we have proved above; therefore also the Holy Spirit is equal; and if equal, equal in all things, on account of the absolute simplicity which is in that substance. And therefore they are not more than three: One who loves Him who is from Himself, and One who loves Him from whom He is, and Love itself. And if this last is nothing, how is "God love"? If it is not substance, how is God substance?

8. But if it is asked how that substance is both simple and manifold: consider, first, why the creature is manifold, but in no way really simple. And first, all that is body is composed certainly of parts; so that therein one part is greater, another less, and the whole is greater than any part whatever or how great soever. For the heaven and the earth are parts of the whole bulk of the world; and the earth alone, and the heaven alone, is composed of innumerable parts; and its third part is less than the remainder, and the half of it is less than the whole; and the whole body of the world, which is usually called by its two parts, viz. the heaven and the earth, is certainly greater than the heaven alone or the earth alone. And in each several body, size is one thing, color another, shape another; for the same color and the same shape may remain with diminished size; and the same shape and the same size may remain with the color changed; and the same shape not remaining, yet the thing may be just as great, and of the same color. And whatever other things are predicated together of body can be changed either all together, or the larger part of them without the rest. And hence the nature of body is conclusively proved to be manifold, and in no respect simple. The spiritual creature also, that is, the soul, is indeed the more simple of the two if compared with the body; but if we omit the comparison with the body, it is manifold, and itself also not simple. For it is on this account more simple than the body, because it is not diffused in bulk through extension of place, but in each body, it is both whole in the whole, and whole in each several part of it; and, therefore, when anything takes place in any small particle whatever of the body, such as the soul can feel, although it does not take place in the whole body, yet the whole soul feels it, since the whole soul is not unconscious of it. But, nevertheless, since in the soul also it is one thing to be skillful, another to be indolent, another to be intelligent, another to be of retentive memory; since cupidity is one thing, fear another, joy another, sadness another; and since things innumerable, and in innumerable ways, are to be found in the nature of the soul, some without others, and some more, some less; it is manifest that its nature is not simple, but manifold. For nothing simple is changeable, but every creature is changeable.

But God is truly called in manifold ways, great, good, wise, blessed, true, and whatsoever other thing seems to be said of Him not unworthily: but His greatness is the same as His wisdom; for He is not great by bulk, but by power; and His goodness is the same as His wisdom and greatness, and His truth the same as all those things; and in Him it is not one thing to be blessed, and another to be great, or wise, or true, or good, or in a word to be Himself.

9. Neither, since He is a Trinity, is He therefore to be thought triple (triplex)²³ otherwise the Father alone, or the Son alone, will be less than the Father and Son together. Although, indeed, it is hard to see how we can say, either the Father alone, or the Son alone; since both the Father is with the Son, and the Son with the Father, always and inseparably: not that both are the Father, or both are the Son; but because they are always one in relation to the other, and neither the one nor the other alone. But because we call even the Trinity itself God alone, although He is always with holy spirits and souls, but say that He only is God, because they are not also God with Him; so we call the Father the Father alone, not because He is separate from the Son, but because they are not both together the Father.

Since, therefore, the Father alone, or the Son alone, or the Holy Spirit alone, is as great as is the Father and the Son and the Holy Spirit together,²⁴ in no manner is He to be called threefold. Forasmuch as bodies increase by union of themselves. For although he who cleaves to his wife is one body; yet it is a greater body than if it were that of the husband alone, or of the wife alone. But in spiritual things, when the less adheres to the greater, as the creature to the Creator, the former becomes greater than it was, not the latter.²⁵ For in those things which are not great by bulk, to be greater is to be better. And the spirit of any creature becomes better, when it cleaves to the Creator, than if it did not so cleave; and therefore also greater because better. "He," then, "that is joined unto the Lord is one spirit:"²⁶ but yet the Lord does not therefore become greater, although he who is joined to the Lord does so. In God Himself, therefore when the equal Son, or the Holy Spirit equal to the Father and the Son, is joined to the equal Father, God does not become greater than each of them severally; because that perfectness cannot increase. But whether it be the Father, or the Son, or the Holy Spirit, He is perfect, and God the Father the Son and the Holy Spirit is perfect; and therefore He is a Trinity rather than triple.