1 Kings 18:35

and the water goeth round about the altar, and also, the trench he hath filled with water.

1 Kings 18:32

and he buildeth with the stones an altar, in the name of Jehovah, and maketh a trench, as about the space of two measures of seed, round about the altar.

1 Kings 18:38

And there falleth a fire of Jehovah, and consumeth the burnt-offering, and the wood, and the stones, and the dust, and the water that is in the trench it hath licked up.

Treasury of Scripture Knowledge

Summary

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

The trench

Bible References

The trench

1 Kings 18:32
and he buildeth with the stones an altar, in the name of Jehovah, and maketh a trench, as about the space of two measures of seed, round about the altar.