Matthew 12:36-39 New English Translation (NET)

36. I tell you that on the day of judgment, people will give an account for every worthless word they speak.

37. For by your words you will be justified, and by your words you will be condemned.”

38. Then some of the experts in the law along with some Pharisees answered him, “Teacher, we want to see a sign from you.”

39. But he answered them, “An evil and adulterous generation asks for a sign, but no sign will be given to it except the sign of the prophet Jonah.

Matthew 12