Investigate the nuanced differences between Vayikra and Tzav Torah portions, analyzing the dynamic of voluntary Nedavah offerings versus commanded sacrifices in Judaism. Examine the intricate balance between maintaining pure intentions in performing Mitzvot, reflecting on the unique aspects of Olah and Shelamim sacrifices. Discover the deeper significance of the offering order in the Torah, elucidating the interplay between voluntary and obligatory actions in Jewish tradition.