Genesis 50:3-10 New King James Version (NKJV)
3 Forty days were required for him, for such are the days required for those who are embalmed; and the Egyptians mourned[a] for him seventy days.
4 Now when the days of his mourning were past, Joseph spoke to the household of Pharaoh, saying, “If now I have found favor in your eyes, please speak in the hearing of Pharaoh, saying, 5 ‘My father made me swear, saying, “Behold, I am dying; in my grave which I dug for myself in the land of Canaan, there you shall bury me.” Now therefore, please let me go up and bury my father, and I will come back.’ ”
6 And Pharaoh said, “Go up and bury your father, as he made you swear.”
7 So Joseph went up to bury his father; and with him went up all the servants of Pharaoh, the elders of his house, and all the elders of the land of Egypt, 8 as well as all the house of Joseph, his brothers, and his father’s house. Only their little ones, their flocks, and their herds they left in the land of Goshen. 9 And there went up with him both chariots and horsemen, and it was a very great gathering.
10 Then they came to the threshing floor of Atad, which is beyond the Jordan, and they mourned there with a great and very solemn lamentation. He observed seven days of mourning for his father.