7 It is said of Antichrist, and all understand of him what the Lord said, “I have come in My Father's Name, and you have not received Me; if another shall come in his own name, him you will receive.” But let us hear John too; “You have heard that Antichrist comes, and even now are there many Antichrists.” What is it in Antichrist that we are in horror of, but that he is to honour his own name, and to despise the Name of the Lord? What else does he that says, “It is I that justify”?
We answer him, “I came to Christ, not with my feet, but with my heart I came; where I heard the Gospel, there did I believe, there was I baptized; because I believed on Christ, I believed on God.” Yet says he, “You are not clean.” “Why?” “Because I was not there.” “Tell me why am not I cleansed, a man who was baptized in Jerusalem, who was baptized, for instance, among the Ephesians, to whom an Epistle you read was written, and whose peace you despise? Lo, to the Ephesians the Apostle wrote; a Church was founded, and remains even to this day; yea, remains in greater fruitfulness, remains in greater numbers, holds fast that which it received of the Apostle, 'If any man preach ought to you than that you have received, let him be accursed.' What now?
What do you say to me? Am I not clean? There was I baptized, am I not clean?” “No, even you are not.” “Why?” “Because I was not there.” “But He who is everywhere was there. He who is everywhere was there, in whose Name I believed. Thou coming I know not whence, yea, rather not coming, but wishing that I should come to you, fixed in this place, sayest to me, 'You were not baptized duly, seeing I was not there.' Consider who was there. What was said to John? 'Upon whom you shall see the Spirit descending like a dove, this is He which baptizes.' Him have you seeking for you; nay, for that you have grudged me who was baptized by Him, you have lost Him rather.”
Source: Sermons on Selected Lessons of the New Testament (New Advent)