NO ONE OTHER than the Ramban seems to have the question, which is, why command the Jewish People to be holy in the middle of Sefer Vayikra when it should have been the introduction to the sefer itself? The entire book is about being holy, so the mitzvah should have either introduced the sefer or concluded it. Putting it in the middle of the sefer seems “nisht ahin nisht aher” (neither here nor there).
