King James Version
Read in contextAnd this is the promise that he hath promised us, even eternal life.
All translations
5 of 5 translations contain this numbered verse.
And this is the promise that he hath promised us, even eternal life.
This is the promise which he promised us, the eternal life.
And this is the promise which he promised us, `even' the life eternal.
and this is the promise that He did promise us -- the life the age-during.
And this is the promise that He Himself made to us: eternal life.