The Satanist realizes that man, and the action and reaction of the universe, is responsible for everything, and doesn't mislead himself into thinking that someone cares.
The Satanist, realizing that anything he gets is of his own doing, takes command of the situation instead of praying to God for it to happen. Positive thinking and positive action add up to results. Just as the Satanist does not pray to God for assistance, he does not pray for forgiveness for his wrong doings. In other religions, when one commits a wrong he either prays to God for forgiveness, or confesses to an intermediary and asks him to pray to God for forgiveness for his sins. The Satanist knows that praying does no good, confessing to another human being, like himself, accomplishes even less - and is, furthermore, degrading.
source: The Satanic Bible, by Anton Lavey / Wanted: God Dead Or Alive (PDF)