According to Plutarch, Ptolemy stole the cult statue from Sinope in Asia Minor, having been instructed in a dream by the "unknown god" to bring the statue to Alexandria, where the statue was pronounced to be Sarapis by two religious experts. One of the experts was of the Eumolpidae, the ancient family from whose members the hierophant of the Eleusinian Mysteries had been chosen since before history, and the other was the scholarly Egyptian priest Manetho, which gave weight to the judgement both for the Egyptians and the Greeks.