“A wicked and adulterous generation seeketh after a sign; and there shall no sign be given unto it, but the sign of the prophet Jonas. And he left them, and departed.”
King James Version (KJV)
16:4 A wicked and adulterous generation - Ye would seek no farther sign, did not your wickedness, your love of the world, which is spiritual adultery, blind your understanding.
Mt 16:4 The sign of the prophet Jonas. See PNT "Mt 12:40".