John 1:20

He avowed--he did not conceal the truth, but avowed, "I am not the Christ."

Matthew 3:11-12

I indeed am baptizing you in water on a profession of repentance; but He who is coming after me is mightier than I: His sandals I am not worthy to carry for a moment; He will baptize you in the Holy Spirit and in fire.

Mark 1:7-8

His announcement was, "There is One coming after me mightier than I--One whose sandal-strap I am unworthy to stoop down and unfasten.

Luke 3:15-17

And while the people were in suspense and all were debating in their minds whether John might possibly be the Anointed One,

John 3:28-36

You yourselves can bear witness to my having said, 'I am not the Christ,' but 'I am His appointed forerunner.'

Treasury of Scripture Knowledge

Summary

And he confessed, and denied not; but confessed, I am not the Christ.

Bible References

General references

John 3:28
You yourselves can bear witness to my having said, 'I am not the Christ,' but 'I am His appointed forerunner.'
Matthew 3:11
I indeed am baptizing you in water on a profession of repentance; but He who is coming after me is mightier than I: His sandals I am not worthy to carry for a moment; He will baptize you in the Holy Spirit and in fire.
Mark 1:7
His announcement was, "There is One coming after me mightier than I--One whose sandal-strap I am unworthy to stoop down and unfasten.
Luke 3:15
And while the people were in suspense and all were debating in their minds whether John might possibly be the Anointed One,