Commentaries
12:1-8 Here is a Divine prediction, which will be a heavy burden to all the enemies of the church. But it is for Israel; for their comfort and benefit. It is promised that God will make foolish the counsels, and weaken the courage of the enemies of the church. The exact meaning is not clear; but God often begins by calling the poor and despised; and in that day even the feeblest will resemble David, and be as eminent in courage and every thing good. Desirable indeed is it that the examples and labours of Christians should render them as fire among wood, as a torch in a sheaf, to kindle the flame of Divine love, to spread religion on the right hand and on the left.
3. (Zec 14:4, 6-9, 13). Jerome states it was a custom in Palestine to test the strength of youths by their lifting up a massive stone; the phrase, "burden themselves with it," refers to this custom. Compare Mt 21:44: The Jews "fell" on the rock of offense, Messiah, and were "broken"; but the rock shall fall on Antichrist, who "burdens himself with it" by his assault on the restored Jews, and "grind him to powder."
all … people of … earth—The Antichristian confederacy against the Jews shall be almost universal.