New Revised Standard Version
I write these things to you who believe in the name of the Son of God, so that you may know that you have eternal life.

Contemporary English Version
All of you have faith in the Son of God, and I have written to let you know you have eternal life.

New American Bible
I write these things to you so that you may know that you have eternal life, you who believe in the name of the Son of God.

Douay-Rheims Bible
These things I write to you that you may know that you have eternal life: you who believe in the name of the Son of God.

These things I write to you that you may know that you have eternal life: you who believe in the name of the Son of God.

have I.

1 John 1:4 And these things we write to you, that you may rejoice and your joy may be full.

1 John 2:1,13,14,21,26 My little children, these things I write to you, that you may not sin. But if any man sin, we have an advocate with the Father, Jesus Christ the just. . . .

John 20:31 But these are written, that you may believe that Jesus is the Christ, the Son of God: and that believing, you may have life in his name.

John 21:24 This is that disciple who giveth testimony of these things and hath written these things: and we know that his testimony is true.

1 Peter 5:12 By Sylvanus, a faithful brother unto you, as I think, I have written briefly: beseeching and testifying that this is the true grace of God, wherein you stand.

believe.

1 John 3:23 And this is his commandment: That we should believe in the name of his Son Jesus Christ and love one another, as he hath given commandment unto us.

John 1:12 But as many as received him, he gave them power to be made the sons of God, to them that believe in his name.

John 2:23 Now when he was at Jerusalem, at the pasch, upon the festival day, many believed in his name, seeing his signs which he did.

John 3:18 He that believeth in him is not judged. But he that doth not believe is already judged: because he believeth not in the name of the only begotten Son of God.

Acts 3:16 And in the faith of his name, this man, whom you have seen and known, hath his name strengthened. And the faith which is by him hath given this perfect soundness in the sight of you all.

Acts 4:12 Neither is there salvation in any other. For there is no other name under heaven given to men, whereby we must be saved.

1 Timothy 1:15,16 A faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners, of whom I am the chief. . . .

ye may know.

1 John 5:10 He that believeth in the Son of God hath the testimony of God in himself. He that believeth not the Son maketh him a liar: because he believeth not in the testimony which God hath testified of his Son.

1 John 1:1,2 That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon and our hands have handled, of the word of life. . . .

Romans 8:15-17 For you have not received the spirit of bondage again in fear: but you have received the spirit of adoption of sons, whereby we cry: Abba (Father). . . .

2 Corinthians 5:1 For we know, if our earthly house of this habitation be dissolved, that we have a building of God, a house not made with hands, eternal in heaven.

Galatians 4:6 And because you are sons, God hath sent the Spirit of his Son into your hearts, crying: Abba, Father.

2 Peter 1:10,11 Wherefore, brethren, labour the more, that by good works you may make sure your calling and election. For doing these things, you shall not sin at any time. . . .