Allah conceals every sin and protects you from exposure to others. You will both not be exposed and be forgiven at the same time by carefully concealing your wrongdoings.

He can forgive in such a manner that you consider that a miracle. Your mind cannot comprehend how forgiving he is.

He forgives all sins if asked. Even if you deserve punishment he will forgive you if you ask for mercy. You can also use this name to get rid of headaches, depression and fever.