Question

Hello Rabbi Michi….
Do the sages have the authority to fundamentally reinterpret the commandments of the Torah? Let me explain: in the Torah there is the prohibition, “You shall not eat over the blood.” According to the interpretation of Nachmanides and Maimonides in the Guide, this refers to a prohibition against practicing an ancient idolatrous ritual connected with inviting demons to eat together at a meal around a pit full of blood….. In contrast, the sages expounded/interpreted the verse as prohibiting eating an animal while its blood, on which its life depends, has not yet left it; also as a prohibition for a religious court that carried out an execution to eat on that same day; and also as a rabbinic prohibition against eating before prayer….. My question, essentially, is whether these prohibitions already existed at the time of the giving of the Torah and the Hebrew Bible (Tanakh), or whether specifically the command regarding the idolatrous ritual—which was certainly very relevant in that period—was the Jewish law that emerged from the verse, while the interpretations of the Sages mentioned here are new and later? And likewise with other commandments in the Torah….
I hope I made myself clear……Thank you.