1 John 4:2-3, 6
1 John 4:2-3 CSB
This is how you know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is from God, but 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.
1 John 4:6 CSB
We are from God. Anyone who knows God listens to us; anyone who is not from God does not listen to us. This is how we know the Spirit of truth and the spirit of deception.