1 John 2:23

Whoever denies the Son, does not acknowledge the Father.

1 John 4:15

Whoever will confess that Jesus is the Son of God, God abides in him, and he in God.

1 John 2:22

Who is a liar, if not he who denies that Jesus is the Christ? He is the antichrist who denies the Father and the Son.

1 John 5:1

Every one who believes that Jesus is the Christ, has been begotten by God; and every one who loves the begetter, loves also the begotten by him.

2 John 1:9-11

Whoever transgresses, and does not abide in the doctrine of Christ, has not God: he who abides in the doctrine of Christ, has both the Father and the Son.

Treasury of Scripture Knowledge

Summary

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

Bible References

Denieth

1 John 2:22
Who is a liar, if not he who denies that Jesus is the Christ? He is the antichrist who denies the Father and the Son.
1 John 4:15
Whoever will confess that Jesus is the Son of God, God abides in him, and he in God.
2 John 1:9
Whoever transgresses, and does not abide in the doctrine of Christ, has not God: he who abides in the doctrine of Christ, has both the Father and the Son.