John 1:20
And he confessed, and did not deny, and confessed, I am not the Christ.
Matthew 3:11-12
I indeed immerse you in water for repentance, but he who comes after me is mightier than I, whose shoes I am not worthy to bear. He will immerse you in a Holy Spirit.
Mark 1:7-8
And he preached, saying, A man mightier than I comes after me of whom I am not worthy, having stooped down, to loosen the strap of his shoes.
Luke 3:15-17
And as the people were expectant, and all pondering in their hearts about John, if perhaps he was the Christ,
John 3:28-36
Ye yourselves testify that I said, I am not the Christ, but that I am sent ahead of that man.