Commentary for Genesis 50:3

וימלאו לו [AND FORTY DAYS] WERE FULFILLED — They (the physicians) completed the days of embalming until forty days were completed for him.

ויבכו אותו מצרים, not only out of respect for Joseph and because of his decree of public mourning, but also because he was revered for his name Yisrael and what this name stood for. He deserved the same respect as royalty.

שבעים יום . Forty days were spent embalming his body and thirty days of weeping for the absence of this man henceforth. We find that both Moses and Aaron were mourned for 30 days (Numbers 20,29 and Deuteronomy 34 8) The difference was that Moses and Aaron were mourned after they had been buried, whereas Yaakov was mourned prior to his interment. This was permissible as the embalming procedure was equated with a kind of burial. During all these days the Egyptians wept out of respect for the feelings of Joseph. According to a view quoted by Rashi, the Egyptians also mourned him, being aware that this man had been able to arrest the famine five years before it had run its predetermined course. This concludes the manuscripts available of the Redak’s commentary on the Torah. We are all impoverished when reflecting on much has been lost of his commentary.