Actually, gods started out that way. Religions started when those with a quick imagination and a glib tongue realised they could use them to manipulate others to obtain wealth and power without having to do anything to earn either.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'