Then said he to the multitude that came forth to be baptized of him, O generation of vipers…
Fra Rocco, a Dominican, preached a celebrated penitential sermon on one occasion; when all the audience were in terror and fell on their knees, showing every sign of contrition. Then he cried, "All who are truly penitent, hold up your hands!" Every man in the vast multitude held up his hand. Then he said, "Holy Archangel Michael, thou who standest with adamantine sword at the judgment-seat of God, cut me off every hand which has been held up hypocritically." Every hand dropped.
(E. P. Hood.)
Parallel VersesKJV: Then said he to the multitude that came forth to be baptized of him, O generation of vipers, who hath warned you to flee from the wrath to come?