Matthew 12:31-33

31 Because of this, I tell you that people will be forgiven any sin and blasphemy, but blaspheming the Ruach HaKodesh will not be forgiven.

32 One can say something against the Son of Man and be forgiven; but whoever keeps on speaking against the Ruach HaKodesh will never be forgiven, neither in the ‘olam hazeh nor in the ‘olam haba.

33 “If you make a tree good, its fruit will be good; and if you make a tree bad, its fruit will be bad; for a tree is known by its fruit.