Matthew 12:31-32 NIV

31 And so I tell you, every kind of sin and slander can be forgiven, but blasphemy against the Spirit will not be forgiven.

References for Matthew 12:31

32 Anyone who speaks a word against the Son of Man will be forgiven, but anyone who speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come.

References for Matthew 12:32