Gods have not been at the very centre of modern discussions of Greek religion. Yet there are several questions worth asking. What did the Greeks see as important differences between themselves and the gods, and between gods and heroes? Which factors helped to define the identity of individual gods (§ 1)? How do we study the pantheon (§ 2)? What did the Greeks consider to be the sphere of influence of individual gods? What was the nature of the divine hierarchy? Last but not least, were the gods persons or powers (§ 3)?