2 Kings 3:20

And it came to pass in the morning, when the meat-offering was offered, at the time of the morning sacrifice, shortly after sunrise, that, behold, there came water by the way of Edom, and the country was filled with water. The Lord had sent a heavy rain or a cloudburst in the hills of Edom during the night, and the water now came rushing down the canyons into the valley where the combined armies were encamped. It was a miracle of God's mercy, one of whose objects was to turn the hearts of all the men to Him.