But if we confess our sins, he is faithful and righteous, forgiving us our sins and cleansing us from all unrighteousness.

Everyone who denies the Son does not have the Father either. The person who confesses the Son has the Father also.

By this you know the Spirit of God: Every spirit that confesses Jesus as the Christ who has come in the flesh is from God,

If anyone confesses that Jesus is the Son of God, God resides in him and he in God.

but every spirit that does not confess Jesus is not from God, and this is the spirit of the antichrist, which you have heard is coming, and now is already in the world.