Then some of the Pharisees and teachers of the law said to him, “Teacher, we want to see a sign from you.” He answered, “A wicked and adulterous generation asks for a sign! But none will be given it except the sign of the prophet Jonah. For as Jonah was three days and three nights in the belly of a huge fish, so the Son of Man will be three days and three nights in the heart of the earth. The men of Nineveh will stand up at the judgment with this generation and condemn it; for they repented at the preaching of Jonah, and now something greater than Jonah is here. Matthew 12:38-41 (NIV) Soon afterwards he went to a town called Nain, and his disciples and a great crowd went with him. As he drew near to the gate of the town, behold, a man who had died was being carried out, the only son of his mother, and she was a widow, and a considerable crowd from the town was with her. And when the Lord saw her, he had compassion on her and said to her, “Do not weep.” Then he came up and touched the bier, and the bearers stood still. And he said, “Young man, I say to you, arise.” And the dead man sat up and began to speak, and Jesus gave him to his mother. Fear seized them all, and they glorified God, saying, “A great prophet has arisen among us!” and “God has visited his people!” And this report about him spread through the whole of Judea and all the surrounding country. Luke 7:11-17 Jesus entered the temple courts, and, while he was teaching, the chief priests and the elders of the people came to him. “By what authority are you doing these things they asked. And who gave you this authority? Jesus replied, “I will also ask you one question. If you answer me, I will tell you by what authority I am doing these things. John’s baptism—where did it come from? Was it from heaven, or of human origin?” They discussed it among themselves and said, “If we say, ‘From heaven,’ he will ask, ‘Then why didn’t you believe him?’ But if we say, ‘Of human origin’—we are afraid of the people, for they all hold that John was a prophet.” So they answered Jesus, “We don’t know.” Then he said, “Neither will I tell you by what authority I am doing these things. Matthew 21:23-27 (NIV)