I John 4:1-8
Beloved brothers and sisters, don't believe every spirit [on this thread], but test the spirits to see whether they are from God, because many false prophets are out there in the world. This is how you can know the Spirit of God: every spirit that is a living witness of Jesus Christ in their behavior and attitude is from God; and every spirit who's attitude and behavior doesn't reflect Jesus is walking in the spirit of the antichrist, which is now very active in this world.
You are from God, brothers & sisters, and have overcome them; because greater is He who is in you than he who is in the world. It is obvious who is behaving like the world; you can plainly read it in their attitude, they're speaking just like the world, and the other ones walking in the flesh are agreeing with them. We are from God; he who is intimate with God listens to us; he who is not from God does not listen to us. By this we know the spirit of truth and the spirit of error.
Beloved, let us love one another, for love is from God and everyone who loves is born of God and knows God. The one who does not love does not know God, for God is love.