Matthew 12:38-41

Then a few Jewish scholars and Pharisees spoke up and said, “Teacher, why don’t you perform a miraculous sign for us.” Jesus replied, “Only evil people who are unfaithful to God would demand a sign. There will be no sign given to you except the sign of the prophet Jonah. For as Jonah was in the belly of the huge 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. The people of Nineveh will also rise up on the day of judgment to condemn this generation. For they all repented when they heard the preaching of Jonah. And there is one greater than Jonah here preaching to you today!