The practice of sorcery and forbidden magick is Pascal's wager but with both cost and risk added: which makes it infinitely more valuable than the regular Pascal's wager, which is properly more of a low-risk, low-cost investment.
If there is a God, who do you think he values more: the person who basically taps out to life, or the person who, in order to ascertain the nature of God, seeks out the devil first; who after all is much more accessible? Jesus is a honeypot for weak souls.