'Three Days' in the Bible

They were there with David three days, eating and drinking; for their brothers had made preparation for them.

either three years of famine; or three months to be consumed before your foes, while the sword of your enemies overtakes you; or else three days the sword of the LORD, even pestilence in the land, and the angel of the LORD destroying throughout all the borders of Israel. Now therefore consider what answer I shall return to him who sent me.'"