1 John 1:9; 1 John 2:23; 1 John 4:2-3; 1 John 4:15

1 John 1:9

9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

1 John 2:23

23 Whosoever denieth the Son, the same hath not the Father: (but) he that acknowledgeth the Son hath the Father also.

1 John 4:2-3

2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:

3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.

1 John 4:15

15 Whosoever shall confess that Jesus is the Son of God, God dwelleth in him, and he in God.