Matthew 12:38-41 King James Version (KJV)
38 Then certain of the scribes and of the Pharisees answered, saying, Master, we would see a sign from thee.
39 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:
40 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.
41 The men of Nineveh shall rise in judgment with this generation, and shall condemn it: because they repented at the preaching of Jonas; and, behold, a greater than Jonas is here.
Matthew 12:38-41 International Children’s Bible (ICB)
The Leaders Ask for a Miracle
38 Then some of the Pharisees and teachers of the law answered Jesus. They said, “Teacher, we want to see you work a miracle as a sign.”
39 Jesus answered, “Evil and sinful people are the ones who want to see a miracle for a sign. But no sign will be given to them. The only sign will be what happened to the prophet Jonah. 40 Jonah was in the stomach of the big fish for three days and three nights. In the same way, the Son of Man will be in the grave three days and three nights. 41 And on the Judgment Day the men from Nineveh[a] will stand up with you people who live today. They will show that you are guilty because when Jonah preached to them, they were sorry and changed their lives. And I tell you that someone greater than Jonah is here!