If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness.
Verse 1 John 1:3 , chapter 2, "And hereby we do know that we know Him." Now, if I say I know God and don't keep His commandments, I am a liar. But here's how I can know that I really know Him, if I keep His commandments.