At Rome, Isis and Serapis were united in the same temple. The precedency which the queen assumed may seem to betray her unequal alliance with the stranger of Pontus. But the superiority of the female sex was established in Egypt as a civil and religious institution (Diodor. Sicul. tom. i. l. i. [c. 27] p. 31, edit. Wesseling), and the same order is observed in Plutarch's Treatise of Isis and Osiris; whom he identifies with Serapis.