Quoting Zachary King, a ex-former high-level Satanist: "In my talks, I usually ask my audience, 'Does anyone here have a friend who has a nice car?' Inevitably, someone raises their hand. And I say, 'Can you legally sell me your friend's car?' 'No.' 'Why?' 'Because it doesn't belong to me.' Indeed, for that very reason, you can't sell your soul. God died for you. Jesus paid the price for your soul. You can't sell it, lend it, give it away... What you can do is give your will to the devil. And the devil will lie to you because, oh, surprise! He's a liar. The Bible tells us so. Satan will claim he has your soul. But you just have to confess to get her back again. You have to give your will back to God. The devil will continue to lie to you even on your deathbed. As you're about to leave this life, he'll be dancing around your bed telling you he owns your soul. He wants you to despair, because despair is a mortal sin, and that way you'll go to hell. When you reach those moments when you're about to end your life here on earth, close your eyes, keep praying the rosary, and ask Our Lady to step on Satan's head. And you'll be fine.