Exodus 7:25
And it continued a week after that the LORD had smote the river.
Exodus 8:9-10
And Moses said unto Pharaoh, "Appoint thou the time unto me, when I shall pray for thee and thy servants and thy people, to drive away the frogs from thee and thy house, so that they shall remain but in the river only."
Exodus 10:23
so that no man saw another, neither rose up from the place where he was by the space of three days, but all the children of Israel had light where they dwelled.
2 Samuel 24:13
And Gad came to David and showed him and said unto him, "Whether wilt thou have seven years hunger in thy land, or that thou flee three months before thine enemies and they following thee, or that there be three days pestilence in thy land? Now understand, and see what word I shall bring again to him that sent me."