Hellenistic Judaism was a form of Judaism in classical antiquity that combined Jewish religious tradition with elements of Greek culture. Until the early Muslim conquests of the eastern Mediterranean, the main centers of Hellenistic Judaism were Alexandria in Egypt and Antioch in Syria (now in southern Turkey), the two main Greek urban settlements of the Middle East and North Africa region, both founded at the end of the fourth century BCE in the wake of the conquests of Alexander the Great. Hellenistic Judaism also existed in Jerusalem during the Second Temple Period, where there was conflict between Hellenizers and traditionalists. The major literary product of the contact of Second Temple Judaism and Hellenistic culture is the Septuagint translation of the Hebrew Bible from Biblical Hebrew and Biblical Aramaic to Koine Greek, specifically, Jewish Koine Greek. Mentionable are also the philosophic and ethical treatises of Philo and the historiographical works of the other Hellenistic Jewish authors. The decline of Hellenistic Judaism started in the second century and its causes are still not fully understood. It may be that it was eventually marginalized by, partially absorbed into, or progressively became the Koine-speaking core of Early Christianity centered on Antioch and its traditions, such as the Melkite Greek Catholic Church and the Greek Orthodox Church of Antioch. Hellenism The conquests of Alexander in the late fourth century BCE spread Greek culture and colonization—a process of cultural change called Hellenization—over non-Greek lands, including the Levant. This gave rise to the Hellenistic period, which sought to create a common or universal culture in the Alexandrian empire based on that of fifth-century Athens, along with a fusion of Near Eastern cultures. The period is characterized by a new wave of Greek colonization which established Greek cities and kingdoms in Asia and Africa, the most famous being Alexandria in Egypt. New cities were established composed of colonists who came from different parts of the Greek world, and not from a specific metropolis ("mother city") as before. These Jews living in countries west of the Levant formed the Hellenistic diaspora. The Egyptian diaspora is the most well-known of these. It witnessed close ties, indeed the firm economic integration, of Judea with the Ptolemaic Kingdom ruled from Alexandria, and the friendly relations which existed between the royal court and the leaders of the Jewish community. This was a diaspora of choice, not of imposition. Information is less robust regarding