Confess your sin, don’t conceal your sin. When you do, you will know PEACE with God, forgiveness & freedom!
We aren't doomed to live in sin. We can live in purity! Remember, John has just told his audience that since they have been forgiven, they should live like it, by walking in the light instead of walking in darkness. John again makes his expectation crystal clear.
1 John 2:1a My little children, I am writing you these things so that you may not sin.