New Revised Standard Version
Let what you heard from the beginning abide in you. If what you heard from the beginning abides in you, then you will abide in the Son and in the Father.

Contemporary English Version
Keep thinking about the message you first heard, and you will always be one in your heart with the Son and with the Father.

New American Bible
Let what you heard from the beginning remain in you. If what you heard from the beginning remains in you, then you will remain in the Son and in the Father.

Douay-Rheims Bible
As for you, let that which you have heard from the beginning abide in you. If that abide in you, which you have heard from the beginning, you also shall abide in the Son and in the Father.

As for you, let that which you have heard from the beginning abide in you. If that abide in you, which you have heard from the beginning, you also shall abide in the Son and in the Father.

abide.

Psalm 119:11 Thy words have I hidden in my heart, that I may not sin against thee.

Proverbs 23:23 Buy truth, and do not sell wisdom, and instruction, and understanding.

Luke 9:44 And all were astonished at the mighty power of God. But while all wondered at all the things he did, he said to his disciples: Lay you up in your hearts these words, for it shall come to pass that the Son of man shall be delivered into the hands of men.

John 15:7 If you abide in me and my words abide in you, you shall ask whatever you will: and it shall be done unto you.

Colossians 3:16 Let the word of Christ dwell in you abundantly: in all wisdom, teaching and admonishing one another in psalms, hymns and spiritual canticles, singing in grace in your hearts to God.

Hebrews 2:1 Therefore ought we more diligently to observe the things which we have heard lest perhaps we should let them slip.

Hebrews 3:14 For we are made partakers of Christ: yet so, if we hold the beginning of his substance firm unto the end.

2 John 1:2 For the sake of the truth which dwelleth in us and shall be with us for ever.

3 John 1:3 I was exceedingly glad when the brethren came and gave testimony to the truth in thee, even as thou walkest in the truth.

Revelation 3:3,11 Have in mind therefore in what manner thou hast received and heard: and observe and do penance: If then thou shalt not watch, I will come to thee as a thief: and thou shalt not know at what hour I will come to thee. . . .

which.

1 John 2:7 Dearly beloved, I write not a new commandment to you, but an old commandment which you had from the beginning. The old commandment is the word which you have heard.

Luke 1:2 According as they have delivered them unto us, who from the beginning were eyewitnesses and ministers of the word:

John 8:25 They said therefore to him: Who art thou? Jesus said to them: The beginning, who also speak unto you.

Philippians 4:15 And you also know, O Philippians, that in the beginning of the gospel, when I departed from Macedonia, no church communicated with me as concerning giving and receiving, but you only.

2 John 1:5,6 And now I beseech thee, lady, not as writing a new commandment to thee, but that which we have had from the beginning, that we love one another. . . .

ye also.

1 John 1:3,7 That which we have seen and have heard, we declare unto you: that you also may have fellowship with us and our fellowship may be with the Father and with his Son Jesus Christ. . . .

1 John 4:13,16 In this we know that we abide in him, and he in us: because he hath given us of his spirit. . . .

John 14:23 Jesus answered and said to him: If any one love me, he will keep my word. And my Father will love him and we will come to him and will make our abode with him.

John 15:9,10 As the Father hath loved me, I also have loved you. Abide in my love. . . .

John 17:21-24 That they all may be one, as thou, Father, in me, and I in thee; that they also may be one in us: that the world may believe that thou hast sent me. . . .