(31) Twelve stones.--The emphatic notice of these, as emblematic of the twelve tribes, is significant. In spite of political division, and even religious separation, the tribes were still united in the covenant of God.

Verse 31. - And Elijah took twelve stones [This number, too, was full of significance. Not only would it carry back their thoughts to the giving of the law (Exodus 24:4; Exodus 28:21), and to their fathers' entrance into the promised land (Joshua 4:3, 9), but it would remind them of the essential unity of the people, notwithstanding the division of the kingdom. The act was thus a protest against the schism. We cannot hold with Keil, Wordsworth, al. that it was "a practical declaration on the part of the prophet that the division of the nation into two kingdoms was at variance with the will of God," because we are distinctly told that that division was "from the Lord" (1 Kings 12:15). But it was certainly a witness against a divided Church, and a reminder of the unity of the race], according to the number of the tribes of the sons of Jacob, unto whom the word of the Lord came [Genesis 32:28], saying, Israel shall be thy name. [He thus protests against the exclusive assumption of the name of Israel, and the exception of the southern kingdom from the glorious heritage and calling of Israel, by the ten tribes. But we cannot follow Bahr in the belief that Jacob received "from Jehovah the name of Israel," i.e., the "soldier of God," because he commanded his house to "put away the strange gods" (Genesis 35:2, 10 sqq.), or that Elijah would teach that "only those who did as Jacob did had a claim to his name." The great idea is that the people are one, and are the Lord's.]

18:21-40 Many of the people wavered in their judgment, and varied in their practice. Elijah called upon them to determine whether Jehovah or Baal was the self-existent, supreme God, the Creator, Governor, and Judge of the world, and to follow him alone. It is dangerous to halt between the service of God and the service of sin, the dominion of Christ and the dominion of our lusts. If Jesus be the only Saviour, let us cleave to him alone for every thing; if the Bible be the world of God, let us reverence and receive the whole of it, and submit our understanding to the Divine teaching it contains. Elijah proposed to bring the matter to a trial. Baal had all the outward advantages, but the event encourages all God's witnesses and advocates never to fear the face of man. The God that answers by fire, let him be God: the atonement was to be made by sacrifice, before the judgment could be removed in mercy. The God therefore that has power to pardon sin, and to signify it by consuming the sin-offering, must needs be the God that can relieve from the calamity. God never required his worshippers to honour him in the manner of the worshippers of Baal; but the service of the devil, though sometimes it pleases and pampers the body, yet, in other things, really is cruel to it, as in envy and drunkenness. God requires that we mortify our lusts and corruptions; but bodily penances and severities are no pleasure to him. Who has required these things at your hands? A few words uttered in assured faith, and with fervent affection for the glory of God, and love to the souls of men, or thirstings after the Lord's image and his favour, form the effectual, fervent prayer of the righteous man, which availeth much. Elijah sought not his own glory, but that of God, for the good of the people. The people are all agreed, convinced, and satisfied; Jehovah, he is the God. Some, we hope, had their hearts turned, but most of them were convinced only, not converted. Blessed are they that have not seen what these saw, yet have believed, and have been wrought upon by it, more than they that saw it.And Elijah took twelve stones, according to the number of the tribes of the sons of Jacob,.... Which he might very easily come at from the mountain:

unto whom the word of the Lord came, saying, Israel shall be thy name, which signifies one that has power with God, as Jacob had, when the word came to him to make a change in his name at Penuel, Genesis 32:28, and as Elijah hoped and believed he should have at this time, being a prophet, and a worshipper of Israel's God.