John 1:20
And he confessed, and denied not, and said plainly, "I am not Christ."
Matthew 3:11-12
I baptise you in water in token of repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptise you with the holy ghost and with fire:
Mark 1:7-8
and preached, saying, "A stronger than I cometh after me, whose shoe latchet I am not worthy to stoop down and unloose.
Luke 3:15-17
As the people were in a doubt, and all men disputed in their hearts of John: Whether he were very Christ;
John 3:28-36
Ye yourselves are witnesses, how that I said, 'I am not Christ: but am sent before him.'