1 Kings 18:31-32

YLT(i) 31 and Elijah taketh twelve stones, according to the number of the tribes of the sons of Jacob, unto whom the word of Jehovah was, saying, `Israel is thy name;' 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.