Who hasn't battled a guilty conscience?
On the other hand, who hasn't felt the reassurance of a clear conscience? When we do something wrong, this silent voice within—like the warning light on the dashboard of our car—gives off signals we find virtually impossible to ignore. Even when we try hard to convince ourselves that everything is okay, if our conscience doesn't agree, it will not let us rest.
As far back as the first century, the Apostle John addressed this struggle. He offered all of us some advice that is not only helpful, it is inspired by God.