Complex sentence: Manetho, an Egyptian priest and historian of that time, wrote scathingly of the Jews and his themes are repeated in the works of Chaeremon, Lysimachus, Poseidonius, Apollonius Molon, and in Apion and Tacitus.
Split into simpler sentences: Manetho, an Egyptian priest and historian of that era, wrote scathingly of the Jews. His themes are repeated in the works of Chaeremon, Lysimachus, Poseidonius, Apollonius Molon, and in Apion and Tacitus.