Passage cross-references.

But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.

But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:

And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.

Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall: …

He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.

I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.

And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.

This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief. …

For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father. …

My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:

He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.

For we know that if our earthly house of this tabernacle were dissolved, we have a building of God, an house not made with hands, eternal in the heavens.

By Silvanus, a faithful brother unto you, as I suppose, I have written briefly, exhorting, and testifying that this is the true grace of God wherein ye stand.

And these things write we unto you, that your joy may be full.

Now when he was in Jerusalem at the passover, in the feast day, many believed in his name, when they saw the miracles which he did.

Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.

I write unto you, fathers, because ye have known him that is from the beginning. I write unto you, young men, because ye have overcome the wicked one. I write unto you, little children, because ye have known the Father. …

This is the disciple which testifieth of these things, and wrote these things: and we know that his testimony is true.

And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all.

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; …

These things have I written unto you concerning them that seduce you.