Kings III 18:31

31 And Eliu took twelve stones, according to the number of the tribes of Israel, as the Lord spoke to him, saying, Israel shall be thy name.

Kings III 18:31 In-Context

29 And they prophesied until the evening came; and it came to pass as it was the time of the offering of the sacrifice, that Eliu the Thesbite spoke to the prophets of the abominations, saying, Stand by for the present, and I will offer my sacrifice. And they stood aside and departed.
30 And Eliu said to the people, Come near to me. And all the people came near to him.
31 And Eliu took twelve stones, according to the number of the tribes of Israel, as the Lord spoke to him, saying, Israel shall be thy name.
32 And he built up the stones in the name of the Lord, and repaired the altar that had been broken down; and he made a trench that would hold two measures of seed round about the altar.
33 And he piled the cleft wood on the altar which he made, and divided the whole-burnt-offering, and laid on the wood, and laid in order on the altar, and said, Fetch me four pitchers of water, and pour on the whole-burnt-offering, and on the wood. And they did so.

The Brenton translation of the Septuagint is in the public domain.