2 Kings 3:16-20

16And he said, “Thus says the Lord: ‘Make this valley full of ditches.’

17For thus says the Lord: ‘You shall not see wind, nor shall you see rain; yet that valley shall be filled with water, so that you, your cattle, and your animals may drink.’

18And this is a simple matter in the sight of the Lord; He will also deliver the Moabites into your hand.

19Also you shall attack every fortified city and every choice city, and shall cut down every good tree, and stop up every spring of water, and ruin every good piece of land with stones.”

20Now it happened in the morning, when the grain offering was offered, that suddenly water came by way of Edom, and the land was filled with water.