ויאמר ד' אלי רב לך אל תוסף דבר אלי בדבר הזה
The Midrash Tanchuma (Va’eschanan 4) relates that Moshe Rabbeinu said to Hashem, “Ribon HaOlamim, You referred to me as Moshe, My servant (Bamidbar 12:7). I truly am Your servant. You also wrote in Your Torah (Shemos 21:5) that the eved Ivri, Hebrew bondsman who refuses to leave servitude after the prescribed six years goes through a process and avado l’olam, he remains in servitude until Yovel. Thus, Hashem, I ask to be allowed to remain in my position as an eved and continue serving You.” Hashem replied, “Rav lach, it is too much for you. It has already been decreed…