*FUNDAMENTALS* Rambam's Yud Gimmel Ikrei Emunah (Introduction): The Number 13

There is no "official" Mitzvah requiring one to believe in the 13 Principles of Emunah of the Rambam. If this is true, how can the Rambam say that a Mitzvah-keeping Jew—who does not believe in these 13 principles—is actually an Apikores!? In this new FUNDAMENTALS series, Rabbi Stark takes a deep dive into the significance of the Rambam's Yud Gimmel Ikrei Emunah.