Verse Comparison: 1 John 2:3
American Standard Version
And hereby we know that we know him, if we keep his commandments.
Amplified® Bible
And this is how we may discern [daily, by experience] that we are coming to know Him [to perceive, recognize, understand, and become better acquainted with Him]: if we keep (bear in mind, observe, practice) His teachings (precepts, commandments).
Darby English Version
And hereby we know that we know him, if we keep his commandments.
International Standard Version
This is how we can be sure that we have come to know him: if we continually keep his commandments.
King James Version
And hereby we do know that we know him, if we keep his commandments.
Young's Literal Translation
and in this we know that we have known him, if his commands we may keep;