Genesis 50:3
They took forty days, for that is the full time needed for embalming. The Egyptians mourned for him seventy days.
Numbers 20:29
When all the community saw that Aaron was dead, the whole house of Israel mourned for Aaron thirty days.
Deuteronomy 34:8
The Israelites mourned for Moses in the deserts of Moab for thirty days; then the days of mourning for Moses ended.
Genesis 50:10
When they came to the threshing floor of Atad on the other side of the Jordan, they mourned there with very great and bitter sorrow. There Joseph observed a seven day period of mourning for his father.
Deuteronomy 21:13
discard the clothing she was wearing when captured, and stay in your house, lamenting for her father and mother for a full month. After that you may have sexual relations with her and become her husband and she your wife.