2 Kings 3:16-19
16-19He then said, "God's word: Dig ditches all over this valley. Here's what will happen—you won't hear the wind, you won't see the rain, but this valley is going to fill up with water and your army and your animals will drink their fill. This is easy for God to do; he will also hand over Moab to you. You will ravage the country: Knock out its fortifications, level the key villages, clear-cut the orchards, clog the springs, and litter the cultivated fields with stones."
20In the morning—it was at the hour of morning sacrifice—the water had arrived, water pouring in from the west, from Edom, a flash flood filling the valley with water.