1 John 4:2-5

2This is how you know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is from God,

3but every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you have heard is coming; even now it is already in the world.

4You are from God, little children, and you have conquered them, because the one who is in you is greater than the one who is in the world.

5They are from the world. Therefore what they say is from the world, and the world listens to them.