The halakhic, philosophical and historical revolution wrought by Rav Yehuda Alkalai is especially manifest in his commentary on the biblical unit on teshuva (Devarim 30) and his definition of the concept of teshuva in Halakha and in history. This textual unit, and the concept of teshuva, become a central focus of
his overall worldview and his activities. We explore his ideas and analysis of the "teshuva section" in Devarim 30.