Matthew 12:24, 30-31

But when the Pharisees heard about the miracle, they said, “No wonder he can cast out demons. He gets his power from Satan, the prince of demons.”

“Anyone who isn’t with me opposes me, and anyone who isn’t working with me is actually working against me. “So I tell you, every sin and blasphemy can be forgiven—except blasphemy against the Holy Spirit, which will never be forgiven.