38 Then some of the scribes and Pharisees said to Jesus, "Teacher, we want to see a sign from you."
39 But he replied to them,"An evil and adulterous generation craves a sign. Yet no sign will be given to it except the sign of the prophet Jonah.
40 For just as Jonah was in the stomach of the sea creature for three days and three nights,so the Son of Man will be in the heart of the earth for three days and three nights.