Just as chalk can be removed from a blackboard, with sincere repentance the effects of our transgression can be erased through the Atonement of Jesus Christ.
http://www.lds.org/general-conference/2013/10/the-key-to-spiritual-protection?lang=eng
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Just as chalk can be removed from a blackboard -Boyd K. Packer 4×6.jpg3.46 MB
Just as chalk can be removed from a blackboard -Boyd K. Packer 8×10.jpg8.85 MB