Genesis 7:4

7:4 For in seven days I will cause it to rain on the earth for forty days and forty nights, and I will wipe from the face of the ground every living thing that I have made.”

Genesis 41:48

41:48 Joseph collected all the excess food in the land of Egypt during the seven years and stored it in the cities. In every city he put the food gathered from the fields around it.

Genesis 50:10

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.