Serapis

Serapis (Σέραπις, Attic/Ionian Greek) or Sarapis (Σάραπις, Dorian Greek) is a Graeco-Egyptian god. Serapis was devised during the 3rd century BC on the orders of Ptolemy I of Egypt as a means to unify the Greeks and Egyptians in his realm. The god was depicted as Greek in appearance, but with Egyptian trappings, and combined iconography from a great many cults, signifying both abundance and resurrection. A serapeum (Greek serapeion) was any temple or religious precinct devoted to Serapis. The cultus of Serapis was spread as a matter of deliberate policy by the Ptolemaic kings, who also built an immense Serapeum in Alexandria.

Serapis continued to increase in popularity during the Roman period, often replacing Osiris as the consort of Isis in temples outside Egypt. In 389, a mob led by the Patriarch Theophilus of Alexandria destroyed the Alexandrian Serapeum, but the cult survived until all forms of religion other than Nicene Christianity were suppressed or abolished under Theodosius I in 391.