Religions are a primal power.
The gods manifest themselves in strange ways. They give and take. True devotion is needed to receive their powers. It takes many years of dedication, hardship, understanding of sin and salvation. Every god has ideas on how to gain more followers. They use their powers for good or bad. They have Morals, laws and systems to follow, and more often then not they seem cruel, hard, devious and unfair. Gods prefer to influence rather then a directly communication. Some gods are roaming the world in some form just to gain more followers. Their ways are most incomprehensible, but hints and glimpses are given. (interpretation might be something else). Of the three primal powers this is the most powerful one, but also the most erratic and unknown. This power is the only 'power' capable of ressurecting someone from the dead. The reason is simple: the god/goddess of death is the only one who has the power to grant a return, and he is also bound by certain laws.