1 John 1:10-2:2

10If we claim we have not sinned, we make him out to be a liar and his word is not in us.

1My dear children, I write this to you so that you will not sin. But if anybody does sin, we have an advocate with the Father—Jesus Christ, the Righteous One.

2He is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.