Exodus 7:25
And seven days were completed after Jehovah had stricken the river.
Exodus 8:9-10
And Moses said to Pharaoh, Glory over me! When shall I pray for you, and for your servants, and for your people, to destroy the frogs from you and your houses, so that they may remain in the river only?
Exodus 10:23
They did not see one another, nor did any rise from his place, for three days. But all the sons of Israel had light in their dwellings.
2 Samuel 24:13
And Gad came to David, and told him, and said to him, Shall seven years of famine come upon you and on your land? Or will you flee three months before your enemies while they pursue you? Or shall there be three days' plague in your land? And advise, and see what answer I shall return to Him who sent me.