Whoever denies the Son does not have the Father, but whoever confesses the Son has the Father as well.

John 5:23
so that all may honor the Son just as they honor the Father. Whoever does not honor the Son does not honor the Father who sent Him.

John 8:19
"Where is Your Father?" they asked Him. "You do not know Me or My Father," Jesus answered. "If you knew Me, you would know My Father as well."

John 16:3
They will do these things because they have not known the Father or Me.

John 17:3
Now this is eternal life, that they may know You, the only true God, and Jesus Christ, whom You have sent.

1 John 4:2
By this you will know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is from God,

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

1 John 5:1
Everyone who believes that Jesus is the Christ has been born of God, and everyone who loves the Father also loves those born of Him.

1 John 5:20
And we know that the Son of God has come and has given us understanding, so that we may know Him who is true; and we are in Him who is true--in His Son Jesus Christ. He is the true God and eternal life.

2 John 1:9
Anyone who runs ahead without remaining in the teaching of Christ does not have God. Whoever remains in His teaching has both the Father and the Son.

Whoever denies the Son, the same has not the Father: he that acknowledges the Son has the Father also.