1 John 4:2-3 GNT

2 This is how you will be able to know whether it is God's Spirit: anyone who acknowledges that Jesus Christ came as a human being has the Spirit who comes from God.
3 But anyone who denies this about Jesus does not have the Spirit from God. The spirit that he has is from the Enemy of Christ; you heard that it would come, and now it is here in the world already.