Herodotus, Histories Book 2

The Egyptian book of Herodotus's Histories (fifth century BC) — the oldest surviving Greek account of Egyptian religion, based on conversations with the priests of Memphis, Thebes and Heliopolis. It is the source of the Greek-name equations (Amon is Zeus, Osiris is Dionysus, Isis is Demeter, Horus is Apollo, Bubastis is Artemis) and of the rule that Herodotus will not name the god of the dead.