1 John 2:24

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.

²³ Whoever denies the Son does not have the Father, but whoever confesses the Son has the Father as well.

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.

²⁶ I have written these things to you about those who are trying to deceive you.

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

Compare

BSB: 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.
KJV: Let that therefore abide in you, which ye have heard from the beginning. If that which ye have heard from the beginning shall remain in you, ye also shall continue in the Son, and in the Father.
WEB: Therefore, as for you, let that remain in you which you heard from the beginning. If that which you heard from the beginning remains in you, you also will remain in the Son, and in the Father.
ASV: As for you, let that abide in you which ye heard from the beginning. If that which ye heard from the beginning abide in you, ye also shall abide in the Son, and in the Father.
DARBY: As for *you* let that which ye have heard from the beginning abide in you: if what ye have heard from the beginning abides in you, *ye* also shall abide in the Son and in the Father.
BLB: You⁺, let that which you⁺ heard from the beginning remain in you⁺. If that which you⁺ heard from the beginning should remain in you⁺, you⁺ also will remain in the Son and in the Father.

ÅB: La det bli i dere som dere hørte fra begynnelsen! Dersom det dere hørte fra begynnelsen, blir i dere, skal og dere bli i Sønnen og i Faren.
OTB: Når det gjelder dere, sørg for at det dere hørte fra begynnelsen, forblir i dere. Hvis det dere hørte fra begynnelsen, forblir i dere, vil dere også forbli i Sønnen og i Faderen.
B1930: La det bli i eder som I hørte fra begynnelsen! Dersom det I hørte fra begynnelsen, blir i eder, skal og I bli i Sønnen og i Faderen.

John 14:23
Jesus replied, “If anyone loves Me, he will keep My word. My Father will love him, and We will come to him and make Our home with him.
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John 15:9–10
As the Father has loved Me, so have I loved you. Remain in My love.
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1 John 4:13
By this we know that we remain in Him, and He in us: He has given us of His Spirit.
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1 John 4:16
And we have come to know and believe the love that God has for us. God is love; whoever abides in love abides in God, and God in him.
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2 John 1:5–6
And now I urge you, dear lady—not as a new commandment to you, but one we have had from the beginning—that we love one another.
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1 John 2:7
Beloved, I am not writing to you a new commandment, but an old one, which you have had from the beginning. This commandment is the message you have heard.
Read in context
John 17:21–24
that all of them may be one, as You, Father, are in Me, and I am in You. May they also be in Us, so that the world may believe that You sent Me.
Read in context
1 John 1:3
We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And this fellowship of ours is with the Father and with His Son, Jesus Christ.
Read in context