Rabbi Levi ben Gershom is recognised as both scientist and philosopher; research has been devoted primarily to his work in the fields of philosophy, astronomy, biology, logic, physics, etc. This article deals with a different side of this multi-faceted scholar: the talmudic and halakhic aspects of his commentary on the Torah. It discusses, as well, the work's great popularity reflected in the many surviving manuscript copies, as well as by fragments preserved in the Cairo Genizah and the early publication date of the first edition of his biblical commentary. It discusses his emphasis on the simple meaning of the text (peshat), as well as describing how the different manuscripts of the commentary demonstrate that it was written in several recensions.