{g} Beat your plowshares into swords, and your pruninghooks into spears: let the weak say, I am strong.

(g) When I will execute my judgments against my enemies, I will cause everyone to be ready, and to prepare their weapons to destroy one another, for my Church's sake.

Wesley's Notes

3:10 I am strong - Put on strength and valour; let none be absent from this war.

King James Translators' Notes

pruninghooks: or, scythes

Jamieson-Fausset-Brown Bible Commentary

10. Beat your ploughshares into swords-As the foes are desired to "beat their ploughshares into swords, and their pruning hooks into spears," that so they may perish in their unhallowed attack on Judah and Jerusalem, so these latter, and the nations converted to God by them, after the overthrow of the antichristian confederacy, shall, on the contrary, "beat their swords into ploughshares, and their spears into pruning hooks," when under Messiah's coming reign there shall be war no more (Isa 2:4; Ho 2:18; Mic 4:3).

let the weak say, I am strong-So universal shall be the rage of Israel's foes for invading her, that even the weak among them will fancy themselves strong enough to join the invading forces. Age and infirmity were ordinarily made valid excuses for exemption from service, but so mad shall be the fury of the world against God's people, that even the feeble will not desire to be exempted (compare Ps 2:1-3).

Matthew Henry's Concise Commentary

3:9-17 Here is a challenge to all the enemies of God's people. There is no escaping God's judgments; hardened sinners, in that day of wrath, shall be cut off from all comfort and joy. Most of the prophets foretell the same final victory of the church of God over all that oppose it. To the wicked it will be a terrible day, but to the righteous it will be a joyful day. What cause have those who possess an interest in Christ, to glory in their Strength and their Redeemer! The acceptable year of the Lord, a day of such great favour to some, will be a day of remarkable vengeance to others: let every one that is out of Christ awake, and flee from the wrath to come.