Matthew 12:28-31

But, if I drive out demons by the power of the Spirit of God, then the end of Satan’s kingdom has come! Who would dare enter the house of a mighty man and steal his property? First he must be overpowered and tied up by one who is stronger than he. Then his entire house can be plundered. “So join with me, for if you’re not on my side you are against me. And if you refuse to help me gather the spoils, you are making things worse. This is why I warn you. God will forgive people for every sin and blasphemy except one. There is no forgiveness for the sin of blasphemy against the Holy Spirit.