1 Kings 18:34 (KJV)

And with the stones he built an altar in the name of the Lord: and he made a trench about the altar, as great as would contain two measures of seed.

And he put the wood in order, and cut the bullock in pieces, and laid him on the wood, and said, Fill four barrels with water, and pour it on the burnt sacrifice, and on the wood.

And he said, Do it the second time. And they did it the second time. And he said, Do it the third time. And they did it the third time.

And the water ran round about the altar; and he filled the trench also with water.

And it came to pass at the time of the offering of the evening sacrifice, that Elijah the prophet came near, and said, Lord God of Abraham, Isaac, and of Israel, let it be known this day that thou art God in Israel, and that I am thy servant, and that I have done all these things at thy word.