This is how we know if they have the Spirit of God: If a person claiming to be a prophet acknowledges that Jesus Christ came in a real body, that person has the Spirit of God. But if someone claims to be a prophet and does not acknowledge the truth about Jesus, that person is not from God. Such a person has the spirit of the Antichrist, which you heard is coming into the world and indeed is already here. But you belong to God, my dear children. You have already won a victory over those people, because the Spirit who lives in you is greater than the spirit who lives in the world. God showed how much he loved us by sending his one and only Son into the world so that we might have eternal life through him. This is real love—not that we loved God, but that he loved us and sent his Son as a sacrifice to take away our sins.
1 John 4: 2-4,9-10