People who would not sell their soul for money are those who do not need a lot of money to sustain their daily living. They will also not cling onto money and accumulate massive amount of it as they do not heavily depend on it.
People who do, are easily lured by the devil. The one who are able to influence and misled the most people to the devil's side will be rewarded with more money. So beware of those who constantly preach about spiritual needs but live the life akin to the devil.