If we say that we have no sin, we deceive ourselves, and the truth is not in us.
All Commentaries on 1 John 1:8 Go To 1 John 1
Augustine of Hippo
AD 430
Consequently, if you have confessed yourself a sinner, the truth is in you: for the Truth itself is light. Your life has not yet shone in perfect brightness, because there are sins in you; but yet you have already begun to be enlightened, because there is in you the confession of sins.