Matthew 12:28-31

But if I by the Spirit of God cast out demons, then is the kingdom of God come upon you. Or how can one enter into the house of the strong man, and spoil his goods, except he first bind the strong man? and then he will spoil his house. He that is not with me is against me; and he that gathereth not with me scattereth. Therefore I say unto you, Every sin and blasphemy shall be forgiven unto men; but the blasphemy against the Spirit shall not be forgiven.