38 Then, answered him, certain of the Scribes and Pharisees, saying, Teacher! we desire of thee, a sign, to behold.39 But, he, answering, said unto them, A wicked and adulterous generation, a sign, doth seek, and, a sign, will not be, given, it, save the sign of Jonah the prophet.40 For, just as was Jonah in the belly of the sea-monster three days and three nights, so, will be the Son of Man, in the heart of the earth, three days and three nights.