1 Kings 18:34

32And 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.

33And 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.

34And 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.

35And the water ran round about the altar; and he filled the trench also with water.

36And 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.