3
This is how we know that we know him: if we keep his commandments.
4
The one who claims, "I know him," while not keeping his commandments, is a liar, and the truth is not in this person.
5
But the love of God is truly perfected in whoever keeps his word. This is how we know we are in him.
6
The one who claims to remain in him ought to live in the same way as he lived.