Matthew 12:31-33

31 Therefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men, but the blasphemy [against] the Spirit shall not be forgiven unto men.

32 And whosoever speaks a word against the Son of man, it shall be forgiven him, but whosoever speaks against the Holy Spirit, it shall not be forgiven him, neither in this age, neither in the [age] to come.

33 Either make the tree good and its fruit good, or else make the tree corrupt and its fruit corrupt; for the tree is known by [its] fruit.