1 John 4:15

4:15 If anyone confesses that Jesus is the Son of God, God resides in him and he in God.

1 John 2:23

2:23 Everyone who denies the Son does not have the Father either. The person who confesses the Son has the Father also.

1 John 4:2

4:2 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,