Charles Ellicott Commentary Micah 4:13

"Arise and thresh, O daughter of Zion; for I will make thy horn iron, and I will make thy hoofs brass; and thou shalt beat in pieces many peoples: and I will devote their gain unto Jehovah, and their substance unto the Lord of the whole earth." — Micah 4:13 (ASV)

Arise and thresh.—Micah, having likened Israel to the sheaves safely gathered, pursues the metaphor by calling upon the daughter of Zion to thresh her enemies after the manner of oxen treading out the corn; and under the symbolism of the horn—the weapon of strength—he promises that God will strengthen her for the work.

I will consecrate.—The better reading is that of the Septuagint, Vulgate, and some ancient versions, which give the second person, Thou shalt consecrate their gain unto the Lord. The termination, indicating the first person in our Hebrew Version, may be a form of the old second person feminine, of which there are other examples.