The Church Fathers, Tertullian and Augustine both explained the trinity in regards to man being created in the image of God. Their explanation was not like modern day explanations that teach man is body, soul, and spirit. This explanation of the Trinity and man being created in the image of God is not found in Scripture. The teaching handed down through the church Fathers is that man was created with a mind, word, and spirit (will or desire).
Man has a mind that speaks words and communicated his thoughts. These thoughts are produced from the mind. The mind is influenced by the mans will, emotions, or desire. This is how man and woman are created in God’s image. The mind, word and spirit is what separate man from all other created things.
Tertullian a.d. 145–220
The basic idea of the Trinity in relationship to man, is found in Tertullians writings “Against Praxeas” He explains that, the thoughts of God, His mind, has Reason. His reason produces His Word so that, the Mind or Thoughts and reason comes prior to His Word; however, there was never a time when God did not speak. God’s Word comes from His mind and reasoning. So the Son of God (God’s Word) comes from the Father (God’s mind and reasoning).
But since they will have the Two to be but One, so that the Father shall be deemed to be the same as the Son, it is only right that the whole question respecting the Son should be examined, as to whether He exists, and who He is and the mode of His existence. Thus shall the truth itself secure its own sanction from the Scriptures, and the interpretations which guard them. There are some who allege that even Genesis opens thus in Hebrew: “In the beginning God made for Himself a Son.” As there is no ground for this, I am led to other arguments derived from God’s own dispensation, in which He existed before the creation of the world, up to the generation of the Son. For before all things God was alone—being in Himself and for Himself universe, and space, and all things. Moreover, He was alone, because there was nothing external to Him but Himself. Yet even not then was He alone; for He had with Him that which He possessed in Himself, that is to say, His own Reason.
For God is rational, and Reason was first in Him; and so all things were from Himself. This Reason is His own Thought (or Consciousness) which the Greeks call λόγος, by which term we also designate Word or Discourse and therefore it is now usual with our people, owing to the mere simple interpretation of the term, to say that the Word was in the beginning with God; although it would be more suitable to regard Reason as the more ancient; because God had not Word from the beginning, but He had Reason even before the beginning; because also Word itself consists of Reason, which it thus proves to have been the prior existence as being its own substance. Not that this distinction is of any practical moment. For although God had not yet sent out His Word, He still had Him within Himself, both in company with and included within His very Reason, as He silently planned and arranged within Himself everything which He was afterwards about to utter through His Word. Now, whilst He was thus planning and arranging with His own Reason, He was actually causing that to become Word which He was dealing with in the way of Word or Discourse. And that you may the more readily understand this, consider first of all, from your own self, who are made “in the image and likeness of God,” for what purpose it is that you also possess reason in yourself, who are a rational creature, as being not only made by a rational Artificer, but actually animated out of His substance. Observe, then, that when you are silently con versing with yourself, this very process is carried on within you by your reason, which meets you with a word at every movement of your thought, at every impulse of your conception.
Whatever you think, there is a word; whatever you conceive, there is reason. You must needs speak it in your mind; and while you are speaking, you admit speech as an interlocutor with you, involved in which there is this very reason, whereby, while in thought you are holding converse with your word, you are (by reciprocal action) producing thought by means of that converse with your word. Thus, in a certain sense, the word is a second person within you, through which in thinking you utter speech, and through which also, (by reciprocity of process,) in uttering speech you generate thought. The word is itself a different thing from yourself. Now how much more fully is all this transacted in God, whose image and likeness even you are regarded as being, inasmuch as He has reason within Himself even while He is silent, and involved in that Reason His Word! I may therefore without rashness first lay this down (as a fixed principle) that even then before the creation of the universe God was not alone, since He had within Himself both Reason, and, inherent in Reason, His Word, which He made second to Himself by agitating it within Himself.
Against Praxeas Chapter V
Augustine a.d. 354–430
Augustine refers to this as “mind itself, and the love of it, and the knowledge of it.” The basic idea behind the Trinity is that God has a mind that thinks, He speaks His word from His mind, and that is all from His will or Spirit. In other words, God Loves (desires or wills), then He reasons from His mind (Thinks about what He desires), and then speaks His Word (communicates His knowledge.) In this way God created man and woman in His image. That, we desire, think, and speak; All of which is unique to man.
Augustine teaches that the Trinity and the image of man are based off of the mind, knowledge, and love of God. These three being the Father, Son, and Holy Spirit. The mind, love, and knowledge in man are imperfect where with God, they are perfect and equal.
But as there are two things (duo quædam), the mind and the love of it, when it loves itself; so there are two things, the mind and the knowledge of it, when it knows itself. Therefore the mind itself, and the love of it, and the knowledge of it, are three things (tria quædam), and these three are one; and when they are perfect they are equal.
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For knowledge is a kind of life in the reason of the knower, but the body is not life; and any life is greater than any body, not in bulk, but in power. But when the mind knows itself, its own knowledge does not rise above itself, because itself knows, and itself is known. When, therefore, it knows itself entirely, and no other thing with itself, then its knowledge is equal to itself; because its knowledge is not from another nature, since it knows itself. And when it perceives itself entirely, and nothing more, then it is neither less nor greater. We said therefore rightly, that these three things, [mind, love, and knowledge], when they are perfect, are by consequence equal.
On the Trinity Book IX. Chapter 4. section 4
Augustine states that the love and knowledge of God cannot be separated.
But, further, although one who loves or one who knows is a substance, and knowledge is a substance, and love is a substance, but he that loves and love, or, he that knows and knowledge, are spoken of relatively to each other, as are friends: yet mind or spirit are not relatives, as neither are men relatives: nevertheless he that loves and love, or he that knows and knowledge, cannot exist separately from each other, as men can that are friends.
On the Trinity Book IX. Chapter 4. section 6
Augustine explains that the mind, love and knowledge make up the whole and are in themselves the whole as well.
And even if there are some bodies which cannot be wholly separated and divided, yet they would not be bodies unless they consisted of their own proper parts. A part then is predicated relatively to a whole, since every part is a part of some whole, and a whole is a whole by having all its parts. But since both part and whole are bodies, these things are not only predicated relatively, but exist also substantially. Perhaps, then, the mind is a whole, and the love with which it loves itself, and the knowledge with which it knows itself, are as it were its parts, of which two parts that whole consists. Or are there three equal parts which make up the one whole? But no part embraces the whole, of which it is a part; whereas, when the mind knows itself as a whole, that is, knows itself perfectly, then the knowledge of it extends through the whole of it; and when it loves itself perfectly, then it loves itself as a whole, and the love of it extends through the whole of it.
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These three, therefore, must needs be of one and the same essence; and for that reason, if they were confounded together as it were by a commingling, they could not be in any way three, neither could they be mutually referred to each other. Just as if you were to make from one and the same gold three similar rings, although connected with each other, they are mutually referred to each other, because they are similar. For everything similar is similar to something, and there is a trinity of rings, and one gold. But if they are blended with each other, and each mingled with the other through the whole of their own bulk, then that trinity will fall through, and it will not exist at all; and not only will it be called one gold, as it was called in the case of those three rings, but now it will not be called three things of gold at all.
On the Trinity Book IX. Chapter 4. section 7
Augustine’s explanation goes further in stating that the mind, love, and knowledge are not commingled but; rather, they are united as one essence.
But in these three, when the mind knows itself and loves itself, there remains a trinity: mind, love, knowledge; and this trinity is not confounded together by any commingling: although they are each severally in themselves and mutually all in all, or each severally in each two, or each two in each. Therefore all are in all. For certainly the mind is in itself, since it is called mind in respect to itself: although it is said to be knowing, or known, or knowable, relatively to its own knowledge; and although also as loving, and loved, or lovable, it is referred to love, by which it loves itself. And knowledge, although it is referred to the mind that knows or is known, nevertheless is also predicated both as known and knowing in respect to itself: for the knowledge by which the mind knows itself is not unknown to itself. And although love is referred to the mind that loves, whose love it is; nevertheless it is also love in respect to itself, so as to exist also in itself: since love too is loved, yet cannot be loved with anything except with love, that is with itself. So these things are severally in themselves.
But so are they in each other; because both the mind that loves is in love, and love is in the knowledge of him that loves, and knowledge is in the mind that knows. And each severally is in like manner in each two, because the mind which knows and loves itself, is in its own love and knowledge: and the love of the mind that loves and knows itself, is in the mind and in its knowledge: and the knowledge of the mind that knows and loves itself is in the mind and in its love, because it loves itself that knows, and knows itself that loves. And hence also each two is in each severally, since the mind which knows and loves itself, is together with its own knowledge in love, and together with its own love in knowledge; and love too itself and knowledge are together in the mind, which loves and knows itself.
But in what way all are in all, we have already shown above; since the mind loves itself as a whole, and knows itself as a whole, and knows its own love wholly, and loves its own knowledge wholly, when these three things are perfect in respect to themselves. Therefore these three things are marvellously inseparable from each other, and yet each of them is severally a substance, and all together are one substance or essence, whilst they are mutually predicated relatively.
On the Trinity Book IX. Chapter 5 Section 8
Further, Augustine shows that the love, word, and knowledge of God are all joined together.
It is rightly asked then, whether all knowledge is a word, or only knowledge that is loved. For we also know the things which we hate; but what we do not like, cannot be said to be either conceived or brought forth by the mind. For not all things which in anyway touch it, are conceived by it; but some only reach the point of being known, but yet are not spoken as words, as for instance those of which we speak now. For those are called words in one way, which occupy spaces of time by their syllables, whether they are pronounced or only thought; and in another way, all that is known is called a word imprinted on the mind, as long as it can be brought forth from the memory and defined, even though we dislike the thing itself; and in another way still, when we like that which is conceived in the mind.
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A word, then, which is the point we wish now to discern and intimate, is knowledge together with love. Whenever, then, the mind knows and loves itself, its word is joined to it by love. And since it loves knowledge and knows love, both the word is in love and love is in the word, and both are in him who loves and speaks.
On the Trinity Book IX. Chapter 10 section 15
Augustine compares the knowledge, love and word to man being created in the image of God.
And hence, in so far as we know God, we are like Him, but not like to the point of equality, since we do not know Him to the extent of His own being. And as, when we speak of bodies by means of the bodily sense, there arises in our mind some likeness of them, which is a phantasm of the memory; for the bodies themselves are not at all in the mind, when we think them, but only the likenesses of those bodies; therefore, when we approve the latter for the former, we err, for the approving of one thing for another is an error; yet the image of the body in the mind is a thing of a better sort than the species of the body itself, inasmuch as the former is in a better nature, viz. in a living substance, as the mind is: so when we know God, although we are made better than we were before we knew Him, and above all when the same knowledge being also liked and worthily loved becomes a word, and so that knowledge becomes a kind of likeness of God; yet that knowledge is of a lower kind, since it is in a lower nature; for the mind is creature, but God is Creator.
And from this it may be inferred, that when the mind knows and approves itself, this same knowledge is in such way its word, as that it is altogether on a par and equal with it, and the same; because it is neither the knowledge of a lower essence, as of the body, nor of a higher, as of God. And whereas knowledge bears a likeness to that which it knows, that is, of which it is the knowledge; in this case it has perfect and equal likeness, when the mind itself, which knows, is known. And so it is both image and word; because it is uttered concerning that mind to which it is equalled in knowing, and that which is begotten is equal to the begetter.
fifteen books of aurelius augustinus, Bishop of Hippo, on the Trinity Book IX. Chapter 11 section 16
Augustine go further to explain that the desire precedes the mind. The mind then begets the knowledge. So the the relationship with man being create din God’s image and the Trinity is that the Spirit (will or desire), caused the Father to think (The mind of God), which begets the Son (The knowledge and Word). Just like man has a desire, thinks about the desire he has, then speaks the knowledge of that thought.
What then is love? Will it not be an image? Will it not be a word? Will it not be begotten? For why does the mind beget its knowledge when it knows itself, and not beget its love when it loves itself? For if it is the cause of its own knowing, for the reason that it is knowable, it is also the cause of its own love because it is lovable. It is hard, then, to say why it does not beget both. For there is a further question also respecting the supreme Trinity itself, the omnipotent God the Creator, after whose image man is made, which troubles men, whom the truth of God invites to the faith by human speech; viz. why the Holy Spirit is not also to be either believed or understood to be begotten by God the Father, so that He also may be called a Son.
And this question we are endeavoring in some way to investigate in the human mind, in order that from a lower image, in which our own nature itself as it were answers, upon being questioned, in a way more familiar to ourselves, we may be able to direct a more practised mental vision from the enlightened creature to the unchangeable light; assuming, however, that the truth itself has persuaded us, that as no Christian doubts the Word of God to be the Son, so that the Holy Spirit is love. Let us return, then, to a more careful questioning and consideration upon this subject of that image which is the creature, that is, of the rational mind; wherein the knowledge of some things coming into existence in time, but which did not exist before, and the love of some things which were not loved before, opens to us more clearly what to say: because to speech also itself, which must be disposed in time, that thing is easier of explanation which is comprehended in the order of time.
First, therefore, it is clear that a thing may possibly be knowable, that is, such as can be known, and yet that it may be unknown; but that it is not possible for that to be known which is not knowable. Wherefore it must be clearly held that everything whatsoever that we know begets at the same time in us the knowledge of itself; for knowledge is brought forth from both, from the knower and from the thing known. When, therefore, the mind knows itself, it alone is the parent of its own knowledge; for it is itself both the thing known and the knower of it. But it was knowable to itself also before it knew itself, only the knowledge of itself was not in itself so long as it did not know itself. In knowing itself, then, it begets a knowledge of itself equal to itself; since it does not know itself as less than itself is, nor is its knowledge the knowledge of the essence of some one else, not only because itself knows, but also because it knows itself, as we have said above.
What then is to be said of love; why, when the mind loves itself, it should not seem also to have begotten the love of itself? For it was lovable to itself even before it loved itself since it could love itself; just as it was knowable to itself even before it knew itself, since it could know itself. For if it were not knowable to itself, it never could have known itself; and so, if it were not lovable to itself, it never could have loved itself. Why therefore may it not be said by loving itself to have begotten its own love, as by knowing itself it has begotten its own knowledge? Is it because it is thereby indeed plainly shown that this is the principle of love, whence it proceeds? for it proceeds from the mind itself, which is lovable to itself before it loves itself, and so is the principle of its own love by which it loves itself: but that this love is not therefore rightly said to be begotten by the mind, as is the knowledge of itself by which the mind knows itself, because in the case of knowledge the thing has been found already, which is what we call brought forth or discovered; and this is commonly preceded by an inquiry such as to find rest when that end is attained.
For inquiry is the desire of finding, or, what is the same thing, of discovering. But those things which are discovered are as it were brought forth, whence they are like offspring; but wherein, except in the case itself of knowledge? For in that case they are as it were uttered and fashioned. For although the things existed already which we found by seeking, yet the knowledge of them did not exist, which knowledge we regard as an offspring that is born. Further, the desire (appetitus) which there is in seeking proceeds from him who seeks, and is in some way in suspense, and does not rest in the end whither it is directed, except that which is sought be found and conjoined with him who seeks. And this desire, that is, inquiry,—although it does not seem to be love, by which that which is known is loved, for in this case we are still striving to know,—yet it is something of the same kind.
For it can be called will (voluntas),since every one who seeks wills (vult) to find; and if that is sought which belongs to knowledge, every one who seeks wills to know. But if he wills ardently and earnestly, he is said to study (studere): a word that is most commonly employed in the case of pursuing and obtaining any branches of learning. Therefore, the bringing forth of the mind is preceded by some desire, by which, through seeking and finding what we wish to know, the offspring, viz. knowledge itself, is born. And for this reason, that desire by which knowledge is conceived and brought forth, cannot rightly be called the bringing forth and the offspring; and the same desire which led us to long for the knowing of the thing, becomes the love of the thing when known, while it holds and embraces its accepted offspring, that is, knowledge, and unites it to its begetter. And so there is a kind of image of the Trinity in the mind itself, and the knowledge of it, which is its offspring and its word concerning itself, and love as a third, and these three are one, and one substance. Neither is the offspring less, since the mind knows itself according to the measure
On the Trinity Book IX. Chapter 12.17-18
Both Tertullian and Augustine teach that man being created in the image of God shows that God is mind, word, and will. Or thoughts, knowledge, and love. These three are separate in that the will precedes the thought and the thought precedes the word; yet, they are one in perfection. The mind, word, and will never having a beginning in time. They are inseparable from each other with God, and also equally eternal in their essence as a whole. This teaching of the Trinity is very deep and can be explained using Scripture.