1 John 2:23-25

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 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.

1 John 5:10-13

(He who believes on the Son of God, has the testimony in himself. He who believes not God, has made him a liar, because he has not believed the testimony, which God has testified concerning his Son.)

1 John 5:20

Moreover, we know that the Son of God has come, and has given us understanding, that we might know him that is true; and we are in him that is true-in his Son Jesus Christ. This is the true God, and the eternal life.

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.

Revelation 2:18

And by the messenger of the congregation in Thyatira, write: These things says the Son of God, who has his eyes as a flame of fire, and his feet like fine brass:

Treasury of Scripture Knowledge

Summary

But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.

Bible References

These

1 John 4:15
Whoever will confess that Jesus is the Son of God, God abides in him, and he in God.
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
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.
Revelation 2:18
And by the messenger of the congregation in Thyatira, write: These things says the Son of God, who has his eyes as a flame of fire, and his feet like fine brass:

Believing

1 John 2:23
Whoever denies the Son, does not acknowledge the Father.
1 John 5:10
(He who believes on the Son of God, has the testimony in himself. He who believes not God, has made him a liar, because he has not believed the testimony, which God has testified concerning his Son.)