Commentaries
4:9-13 Many nations would assemble against Zion to rejoice in her calamities. They would not understand that the Lord had collected them as sheaves are gathered to be threshed; and that Zion would be strengthened to beat them to pieces. Nothing has yet taken place in the history of the Jewish church agreeing with this prediction. When God has conquering work for his people to do, he will furnish them with strength and ability for it. Believers should cry aloud under distresses, with the prayer of faith, not with despondency.
13. thresh—destroy thy foes "gathered" by Jehovah as "sheaves" (Isa 41:15, 16).
thine horn—Zion being compared to an ox treading corn, and an ox's strength lying in the horns, her strength is implied by giving her a horn of iron (compare 1Ki 22:11).
beat in pieces many—(Da 2:44).
I will consecrate their gain unto the Lord—God subjects the nations to Zion, not for her own selfish aggrandizement, but for His glory (Isa 60:6, 9; Zec 14:20, with which compare Isa 23:18) and for their ultimate good; therefore He is here called, not merely God of Israel, but "Lord of the whole earth."