1 John 2:23

²¹ I have not written to you because you lack knowledge of the truth, but because you have it, and because no lie comes from the truth.

²² Who is the liar, if it is not the one who denies that Jesus is the Christ? This is the antichrist, who denies the Father and the Son.

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

²⁴ As for you, let what you have heard from the beginning remain in you. If it does, you will also remain in the Son and in the Father.

²⁵ And this is the promise that He Himself made to us: eternal life.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: Whoever denies the Son does not have the Father, but whoever confesses the Son has the Father as well.
KJV: Whosoever denieth the Son, the same hath not the Father: [but] he that acknowledgeth the Son hath the Father also.
WEB: Whoever denies the Son doesn’t have the Father. He who confesses the Son has the Father also.
ASV: Whosoever denieth the Son, the same hath not the Father: he that confesseth the Son hath the Father also.
DARBY: Whoever denies the Son has not the Father either; he who confesses the Son has the Father also.
BLB: Everyone denying the Son, neither does he have the Father. The one confessing the Son has the Father also.

ÅB: Hver den som nekter Sønnen, har heller ikke Faren; den som bekjenner Sønnen, har og Faren.
OTB: Den som fornekter Sønnen, har ikke Faderen; den som bekjenner Sønnen, har også Faderen.
B1930: Hver den som nekter Sønnen, har heller ikke Faderen; den som bekjenner Sønnen, har og Faderen.

1 John 4:15
If anyone confesses that Jesus is the Son of God, God abides in him, and he in God.
Read in context
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.”
Read in context
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.
Read in context
John 10:30
I and the Father are one.”
Read in context
John 15:23–24
Whoever hates Me hates My Father as well.
Read in context
2 John 1:9–11
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.
Read in context
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.
Read in context
John 14:9–10
Jesus replied, “Philip, I have been with you all this time, and still you do not know Me? Anyone who has seen Me has seen the Father. How can you say, ‘Show us the Father’?
Read in context