Augustine of Hippo

We speak to your charity in the house of God about what the present Psalm has reminded us. Who is it that says: I have prepared a lamp for my Christ. His enemies I will clothe with shame; but upon him my sanctification shall flourish; and what is that lamp which he has prepared for his Christ; and who are the enemies of his Christ, whom he clothes with shame through that lamp; and what is his sanctification, who prepared a lamp for his Christ, which will flourish upon his Christ. In all these words, it seems clear and open that he says here: For my Christ; for nothing else is to be understood than Christ the Lord and our Savior. Therefore, when exploring, as God grants, the depth of this meaning, we find that God the Father says this. Therefore, God the Father, that is, the person of God the Father speaks through the Prophet: I have prepared a lamp for my Christ. However, it is not necessary to explain to Christians that the Son of God is also the Christ of God. Having found the person speaking, let us see what the lamp prepared by God the Father for Christ the Son is. The Lord himself speaks about John the Baptist: He was a burning and shining lamp, and you were willing to rejoice for a while in his light. Therefore, he called John a lamp, kindled from the source of light. To bear witness to the truth. For men lay in this blindness and in this infirmity of the inner eye, so that the sun of righteousness would be sought through the lamp. For if anyone had a clear eye of the heart, he would first gaze upon it, nor would he seek a lamp for its testimony. For when he had said about that lamp: You were willing to rejoice for a while in his light; but I, he says, have greater testimony than John. Therefore, a lamp was kindled for the weak in the night. And how did he kindle it? The Father says to his Christ the Son about John: Behold, I send my angel before you, who will prepare your way before you. He has prepared a lamp for his Christ.