The final great pagan opponent of Christianity was the emperor-philosopher Julian the Apostate (331-363 CE), so called because of his conversion from Christianity to Neoplatonism. He ruled the Roman Empire for only the final 2 years of his life, and during his short reign he did his utmost to restore and promote pagan Hellenism at the expense of Christianity. His major literary attack on the Church, Against the Galileans, underwent the same fate as the anti-Christian writings of Celsus and Porphyry: we have only fragments quoted by his later opponents (especially, in Julian’s case, the bishop Cyril of Alexandria in his Against Julian). In his polemics, Julian pays attention to the book of Genesis, particularly its early chapters. He admired Judaism because it adhered to its ancestral traditions and he castigated Christianity for its having abandoned these traditions, especially Judaism’s sacrificial worship. His attempt to rebuild the temple in Jerusalem was part of his program to restore ancient religious practices. Yet that did not prevent him from regarding many Old Testament passages as absurd.