1 John 2:1-3

My little children, I am writing these things to you so that you may not sin. And if anyone sins, we have an Advocate with the Father, Jesus Christ the righteous;

and He Himself is the propitiation for our sins; and not for ours only, but also for the sins of the whole world.

By this we know that we have come to know Him, if we keep His commandments.