John Wesley on Genesis 50:3

He observed the ceremony of solemn mourning for him. Forty days were taken up in embalming the body, which the Egyptians had an art of doing so curiously, as to preserve the very features of the face unchanged. All this time, and thirty days more, seventy in all, they either confined themselves and sat solitary, or when they went out, appeared in the habit of close mourners, according to the decent custom of the country. Even the Egyptians, many of them, out of the respect they had for Joseph, put themselves into mourning for his father.