 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 Koiné Greek, specifically, Jewish Koiné 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 2nd century AD, and its causes are still not fully understood.