King James Version (KJV)

1 John 3:23

“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.”

Verse in context — 1 John 3

Beloved, if our heart condemn us not, [then] have we confidence toward God.

And whatsoever we ask, we receive of him, because we keep his commandments, and do those things that are pleasing in his sight.

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.

And he that keepeth his commandments dwelleth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he hath given us.

Assurance of salvation and the call to love one another.