John answered - either to the deputation from Jerusalem (see Joh 1:19, etc.), or on some other occasion, simply to remove impressions derogatory to his blessed Master which he knew to be taking hold of the popular mind. (Also see on Mat 3:10.)
saying unto them all - in solemn protestation. So far from entertaining such a thought as laying claim to the honors of Messiahship, the meanest services I can render to that “Mightier than I that is coming after me,” are too high an honor for me. Beautiful spirit, distinguishing this servant of Christ throughout!