Then certain of the scribes and of the Pharisees answered, saying, Master, we would see a sign from thee.
But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it, but the sign of the prophet Jonas:
For as Jonas was three days and three nights in the whale's belly; so shall the Son of man be three days and three nights in the heart of the earth.
And others, tempting him, sought of him a sign from heaven.
And when the people were gathered thick together, he began to say, This is an evil generation: they seek a sign; and there shall no sign be given it, but the sign of Jonas the prophet.
They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?