Today, September 30, the Church celebrates the feast of St. Jerome (ca. 345/7–420), one of the four great Latin doctors of the Church, along with Sts. Ambrose, Augustine, and Gregory the Great. He is primarily known for translating the Hebrew and Greek Scriptures (both Old and New Testaments) into Latin. His translation, known as the Vulgate, was adopted as the official Latin translation of the Bible.