According to this later tradition Yahweh was unknown till the days of Moses, and under the aegis of His power the Hebrew tribes were delivered from Egyptian thraldom.
Compacts with a powerful foreign state, under whose aegis Israel was glad to shelter, involved covenants sealed by sacrificial rites in which the deity or deities of the foreign state were involved as well as Yahweh, the god of the weaker.
About twenty had been found up to 1921, among them Zeus with the aegis, Hermes, Alexander as a Dioscurus, Eros stringing a bow, three groups of the Graces, two satyrs, a headless Aphrodite, and a head of Athena found by the Americans.
In 1783, when the strength of the Persian monarchy was concentrated upon Isfahan and Shiraz, the Georgian tsar Heraclius entered into an agreement with the empress Catherine by which all connection with the shah was disavowed, and a quasi-vassalage to Russia substitutedthe said empire extending her aegis of protection over her new ally.
The animal offered to him may become temporarily sacred; and its skin would have magic properties: this explains his use of the aegis, the goatskin, as a battle-charm; but of a Goat-Zeus, a Ram-Zeus, or a Wolf-Zeus, there is no real trace.