Rashi and Ramban have two different understandings to Kedoshim Tehiyu. Rashi learns it’s a warning to be separate from arayos; Ramban learns it’s a general more warning to act in the line with the spirit of the mitzvos - not to be a menuval b’reshus hatorah - a scoundrel with the permission of the Torah. This episode analyzes each of these positions, specifically addressing what differentiates these warnings from the prohibition of ba’al tosif - adding on the mitzvos.