Mark 3:22, 28-29

The scribes who came down from Jerusalem were saying, “He is possessed by Beelzebul,” and “He casts out the demons by the ruler of the demons.”

“Truly I say to you, all sins shall be forgiven the sons of men, and whatever blasphemies they utter; but whoever blasphemes against the Holy Spirit never has forgiveness, but is guilty of an eternal sin”