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

he answered the question by saying to them all, "As for me, I am baptizing you with water, but One mightier than I is coming, whose very sandal-strap I am not worthy to unfasten: He will baptize you in the Holy Spirit and with fire.

He is the One coming after me, whose sandal strap I’m not worthy to untie.”

As John was completing his ministry he said [to the great crowds], 'Who do you people think I am? [No], I am not the Messiah. But look, Someone is coming [to Israel] after [I complete] my mission whose sandal straps I am not even worthy to unfasten.'