Matthew 12:31-41

31 “So I tell you, every sin and blasphemy can be forgiven—except blasphemy against the Holy Spirit, which will never be forgiven.
32 Anyone who speaks against the Son of Man can be forgiven, but anyone who speaks against the Holy Spirit will never be forgiven, either in this world or in the world to come.
33 “A tree is identified by its fruit. If a tree is good, its fruit will be good. If a tree is bad, its fruit will be bad.
34 You brood of snakes! How could evil men like you speak what is good and right? For whatever is in your heart determines what you say.
35 A good person produces good things from the treasury of a good heart, and an evil person produces evil things from the treasury of an evil heart.
36 And I tell you this, you must give an account on judgment day for every idle word you speak.
37 The words you say will either acquit you or condemn you.”
38 One day some teachers of religious law and Pharisees came to Jesus and said, “Teacher, we want you to show us a miraculous sign to prove your authority.”
39 But Jesus replied, “Only an evil, adulterous generation would demand a miraculous sign; but the only sign I will give them is the sign of the prophet Jonah.
40 For as Jonah was in the belly of the great fish for three days and three nights, so will the Son of Man be in the heart of the earth for three days and three nights.
41 “The people of Nineveh will stand up against this generation on judgment day and condemn it, for they repented of their sins at the preaching of Jonah. Now someone greater than Jonah is here—but you refuse to repent.
Holy Bible. New Living Translation copyright© 1996, 2004, 2007, 2013 by Tyndale House Foundation. Used by permission of Tyndale House Publishers Inc., Carol Stream, Illinois 60188. All rights reserved.