1 John 2:2-4 New English Translation (NET Bible)
2 and he himself is the atoning sacrifice for our sins, and not only for our sins but also for the whole world.
Keeping God’s Commandments
3 Now by this we know that we have come to know God: if we keep his commandments. 4 The one who says “I have come to know God” and yet does not keep his commandments is a liar, and the truth is not in such a person.