Think of it this way. "God" means the greater good. When we engage in commerce, we have to trust that people will not do evil. We trust that they will not cheat us, that the goods are genuine, not stolen, that they will pay the bill and that the money is good. We trust that the goods they purchase will not be used for evil.
It means that commerce and the marketplace should be overseen by morality, not just profit.
The Friedmanites are going to get you. ;^)