1 John 2:3

Love and Hatred for Fellow Believers

3 We know that we have come to know him if we keep his commands.

Read 1 John 2:3 Using Other Translations

And hereby we do know that we know him, if we keep his commandments.
And by this we know that we have come to know him, if we keep his commandments.
And we can be sure that we know him if we obey his commandments.