John 1:20
And he acknowledged, and denied not; and he acknowledged, That I am not the Christ.
Matthew 3:11-12
I truly immerse you in water to repentance; but he coming after me is stronger than I, whose shoes I am not fit to lift up; he shall immerse in the Holy Spirit, and fire
Mark 1:7-8
And he proclaimed, saying, The stronger than I comes after me, of whom I am not sufficient, having bent the head, to loose the strings of his shoes.
Luke 3:15-17
And the people awaiting, and all reasoning in their hearts concerning John, whether he may not be the Christ;
John 3:28-36
Ye yourselves testify to me, that I said, I am not the Christ, but that I am sent before him.