Genesis 50:3

Now forty days were required for it, for such is the period required for embalming. And the Egyptians wept for him seventy days.

Numbers 20:29

When all the congregation saw that Aaron had died, all the house of Israel wept for Aaron thirty days.

Deuteronomy 34:8

So the sons of Israel wept for Moses in the plains of Moab thirty days; then the days of weeping and mourning for Moses came to an end.

Genesis 50:10

When they came to the threshing floor of Atad, which is beyond the Jordan, they lamented there with a very great and sorrowful lamentation; and he observed seven days mourning for his father.

Deuteronomy 21:13

She shall also remove the clothes of her captivity and shall remain in your house, and mourn her father and mother a full month; and after that you may go in to her and be her husband and she shall be your wife.

Treasury of Scripture Knowledge

Summary

And forty days were fulfilled for him; for so are fulfilled the days of those which are embalmed: and the Egyptians mourned for him threescore and ten days.

Bible References

Three-score

Numbers 20:29
When all the congregation saw that Aaron had died, all the house of Israel wept for Aaron thirty days.
Deuteronomy 21:13
She shall also remove the clothes of her captivity and shall remain in your house, and mourn her father and mother a full month; and after that you may go in to her and be her husband and she shall be your wife.
Deuteronomy 34:8
So the sons of Israel wept for Moses in the plains of Moab thirty days; then the days of weeping and mourning for Moses came to an end.