John 1:6

Having in the introduction spoken to us things of urgent importance concerning God the Word, (the Evangelist) proceeding on his road, and in order, afterwards comes to the herald of the Word, his namesake John. And now that thou hearest that he was "sent from God," do not for the future imagine that any of the words spoken by him are mere man's words; for all that he utters is not his own, but is of Him who sent him. Wherefore he is called "messenger" (Mal. iii. 1), for the excellence of a messenger is, that he say nothing of his own. But the expression "was," in this place is not significative of his coming into existence, but refers to his office of messenger; for "'there was' a man sent from God," is used instead of "a man 'was sent' from God."

"There was a man sent from God whose name was John." Truly, brethren beloved, those things which were said before, were said regarding the ineffable divinity of Christ, and almost ineffably. For who shall comprehend "In the beginning was the Word, and the Word was with God"? And do not allow the name word to appear mean to you, through the habit of daily words, for it is added, "and the Word was God." This Word is He of whom yesterday we spoke much; and I trust that God was present, and that even from only thus much speaking something reached your hearts. "In the beginning was the Word." He is the same, and is in the same manner; as He is, so He is always; He cannot be changed; that is, He is. This His name He spoke to His servant Moses: "I am that I am; and He that is hath sent me." Who then shall comprehend this when you see that all mortal things are variable; when you see that not only do bodies vary as to their qualities, by being born, by increasing, by becoming less, by dying, but that even souls themselves through the effect of divers volitions are distended and divided; when you see that men can obtain wisdom if they apply themselves to its light and heat, and also lose wisdom if they remove themselves from it through some evil influence? When, therefore, you see that all those things are variable, what is that which is, unless that which transcends all things which are so that they are not? Who then can receive this? Or who, in what manner soever he may have applied the strength of his mind to touch that which is, can reach to that which he may in any way have touched with his mind? It is as if one were to see his native land at a distance, and the sea intervening; he sees whither he would go, but he has not the means of going. So we desire to arrive at that our stability where that which is, because this alone always is as it is: the sea of this world interrupts our course, even although already we see whither we go; for many do not even see whither they go. That there might be a way by which we could go, He has come from Him to whom we wished to go. And what has He done? He has appointed a tree by which we may cross the sea. For no one is able to cross the sea of this world, unless borne by the cross of Christ. Even he who is of weak eyesight sometimes embraces this cross; and he who does not see from afar whither he goes, let him not depart from it, and it will carry him over.

(Tr. ii. c. 2) What is said above, refers to the Divinity of Christ. He came to us in the form of man, but man in such sense, as that the Godhead was concealed within Him. And therefore there was sent before a great man, to declare by his witness that He was more than man. And who was this? He was a man. (Tr. ii) And how could he declare the truth concerning God, unless he were sent from God. (Tr. ii) What was he called? whose name was John?

That is, the grace of God, or one in whom is grace, who by his testimony first made known to the world the grace of the New Testament, that is, Christ. Or John may be taken to mean, to whom it is given: because that through the grace of God, to him it was given, not only to herald, but also to baptize the King of kings.

Not an Angel, as many have held. The Evangelist here refutes such a notion.