Long, but good.
John Calvin, Sermons on the Deity of Christ, Sermon 1
Let us consider now what Saint John says. “In the beginning” (says he) “was the Word.” And where was this beginning? In God. And what is the beginning of God? There is none. Otherwise God would have to be a creature of our imagination. Thus when mention is made of the beginning of God, we must conclude that it is a beginning which has no time element in it. It is well, then, to compare the passage of Moses where it says that God created everything in the beginning and this passage which says, “The Word was in the beginning.” For Moses deals with creatures which began to be at a certain time. Here St. John speaks only of God, who cannot be without His eternity. We must, then, conclude that this beginning has no beginning. So we see that Jesus Christ always was. That is how Saint John said that Jesus Christ is our eternal God, Who appeared to us in the flesh, as also Saint Paul speaks of it. Next he adds, “this Word was with God,” as if he said that we must separate the Word from all creatures. That is the intention of the Gospel-writer. We must not (says he) imagine that this Word has had something like creatures. We must withdraw from the world. We must ascend above earth and heaven when we think of this Word. One might perhaps ask, “Before there was heaven or earth was it possible that this Word was in the beginning?” Saint John, then, in answer separates this Word from all creatures. He might have said, “When I speak to you of this Word, you must come to God, for He is in God.” Let us regard Him, then, as an Eternity Who belongs neither to creatures, nor to heaven nor to earth, nor to anything which may exist.
Nevertheless, the Gospel here makes a distinction between God and His Word. What is this distinction? It is not a distinction of essence. For he always means that this Word is God. And we must conclude, since we have only one God, and there is only one simple essence in Him, that Jesus Christ, this Eternal Word here spoken of, was not different from God His Father. Yet there is always some distinction. What is it? Now because we cannot comprehend what is so high above all our intelligence and reason, ancient Teachers have used the word “Persons.” They said that in God there were three persons, not as if we speak in ordinary language calling three men three persons, or as in the Papacy they even have the audacity to paint three grotesque pictures, and behold the Trinity! But the word “Persons” in this connection is to express the properties which are of the essence of God. The word “Substance” or (as the Greeks say) “Hypostasis” is still more suitable since it is from Holy Scripture. The Apostle uses it in the first chapter of the Letter to the Hebrews when he says that Jesus Christ is the living image, and the splendor of the glory, the image of the substance of God His Father. When he speaks there of the substance of God, he does not mean the essence. He speaks of this property which belongs to the Father: namely, that He is the Source of all things.
Now let us look at these three Hypostases, as they are called. Let us see how they agree, as much as God teaches us, as I have already said. For we must not exceed these limits, and let us pay as much attention to that as will be required for the exposition of this passage. When one speaks of God, surely men themselves are confused and do not know how to imagine Him without being led astray in their imaginations, as says Saint Paul. So it comes that they were given to too much pride for their prudence and wisdom. Yet God punishes them in such a way that they find themselves in such horrible labyrinths that they cannot get out. But when we allow God to lead us to Himself by Holy Scripture, we shall know how much God will be our Helper. For we shall come to the Father as to the source of all things. Then we shall not be able to conceive of the Father without His Counsel and Eternal Wisdom. Then there will be a virtue which resides in Him which we shall also sense clearly. That is how we shall find these three properties in the essence of God.
This is what Saint John meant by the expression “The Word was with God.” If there were not any distinction, he would not speak thus. For it would be speaking improperly to say, “God was with Himself.” So we know that this Word has some distinction from the Heavenly Father. For this Word was begotten before time, even though God always had His plan and His wisdom. However, we must not imagine any beginning. For we must not say that God was without judgment, without plan, and wisdom. So, we must not put apart and separate from God the Property of this Word by saying that we judge that there was some time when He was not with Him. For this would make Him an idol. But as I have said, the Three are only One, and yet we must distinguish Them, since there is a definite distinction, as is here shown. However, it reminds us of a sentence of an ancient teacher, which is well worthy to be remembered, because it is excellent.
“I cannot,” says he, “think upon these three properties which are shown me in God unless immediately my mind reduces them to one. On the other hand, it is impossible for me to know one only God unless I regard all the three properties, and I see them distinguished by my sense according to the clarity that is given me in Holy Scripture.” That is how believers will know God. Knowing the Father, they will know His wisdom, which is this Word which is here spoken of. They will come more and more to this power which we have discussed. When they have known these three things, they will no longer go astray either this way or that way, but they will come to this sole essence — to know that there is only one God, even only one God who has so created the world that He has omitted nothing of all that was required to accomplish our redemption. That is what we must note with respect to what is said, that this Word was with God. That is, the Gospel-writer wished to separate Jesus Christ from all creatures. However, he showed us the distinction between Him and the Father.
Now he adds “This Word was God” to express still better what he wished to indicate, that Jesus Christ is not a created thing Who had a beginning, but He is our true God. This passage has been poorly understood by some. Someone has foolishly translated it, saying, “God is the Word.” For if we said that God was the Word, the Father would no longer be God and the Holy Spirit would no longer be God. But St. John wished on the contrary to say that the Word is God, as if he said that Jesus Christ is, with respect to His Deity, of one same essence with the Father. Thus he does not exclude the Father from the Deity, but he shows that there is only one essence in God. Although there was a distinction of God from His Word, yet we must always come back to this simple proposition, that They are one God Whom we must adore. To be sure, ancient heretics have worked hard to pervert this passage so as not to be constrained to confess that Jesus Christ was our true God. But we see here that St. John speaks so clearly of the eternity of this Word that there is no place for shuffling or subterfuge.
Next he adds, “This Word was in the beginning with God.” He had not said these two words together. He had said, “This Word was in the beginning” and “He was with God.” Now he joins the two together. That is why we must so contemplate Jesus Christ that we do not estimate that He is not true God and of the same essence with the Father. He has, to be sure, been created with respect to His human nature, but we must go further to know Him as our eternal God, Who is in such a manner our God that He is the wisdom of His Father which has been with God from all time. That, then, is the summary of it. Now when we remember this exposition (as it is simply expressed) it will suffice to instruct us for our salvation. Surely it is all we need to know about it.
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Thus, since all things were made by His Word, we must know that He is our eternal God. There are some heretics who imagine that the Word of God had a beginning at the creation of the world, because the Word was never spoken of until the world was created. As Moses says, “God said, ‘Let there be light,’ and there was light,” etc. They wish to infer by that that the Word began then. Really? On the contrary, we must rather conclude from that that the Word is eternal. For if a man begins to do something, that does not say that he did not previously exist.