1 Kings 18:32-33

With the stones he built an altar With the assistance of the people, who now readily yielded their helping hands. In the name of the Lord By the authority of God and for his worship. He made a trench, as great as would contain two measures of seed As capacious, say some, as a sack that would contain that quantity, namely, two third parts of an ephah. Others understand the words as meaning a trench of sufficient breadth and circuit to sow therein that quantity of seed, or about twenty pounds' weight of barley: which must have been very large indeed. Fill four barrels with water This they could quickly fetch, either from the river Kishon; or, if that was dried up, from the sea; both were at the foot of the mountain. This he did to make the miracle more glorious, and more unquestionable; to show that there was no fallacy in it, no fire concealed in or about the altar; but that the lightning which was to consume the sacrifice came from heaven; and came at Elijah's invocation; and Josephus tells us, that Elijah invited the people to draw near, that they might search and spy everywhere, if they could find any fire secretly conveyed under the altar. Antiq. lib. 8. cap. 7.