God is holey and he can't stand the sight of sin thus, He makes it possible for our sin to be forgiven. Sin makes us guilty. It contaminates all of humanity. The wags of sin is death. It is the culprit in every problem, broken marriage and broken friendship.
Sin is so dangerous it compared to the venom of a snake.
As such we need to deal with it by getting rid of it. With sin being the problem forgiveness is the answer. Forgiveness is God's way of wiping sin from our records. He forgets our sin forever and ever. Micah 7 v18-19.