1 John 2:2-6

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.

The one who says, “I have come to know Him,” and does not keep His commandments, is a liar, and the truth is not in him;

but whoever follows His word, in him the love of God has truly been perfected. By this we know that we are in Him:

the one who says that he remains in Him ought, himself also, to walk just as He walked.