Exodus 7:25
Seven days passed after Jehovah struck the Nile.
Exodus 8:9-10
Moses answered: You choose the time when I am to pray for the frogs to stop bothering you, your officials, and your people, and for them to leave your houses and be found only in the river.
Exodus 10:23
The Egyptians could not see each other. No one left his house during that time. The Israelites, however, had light where they were living.
2 Samuel 24:13
Gad told David the three choices as follows: Seven years of famine could come to you and your land. You could flee from your enemies as they pursue you for three months. Or there could be a three-day plague in your land? Think it over, and decide what answer I should give the one who sent me.