Joel
Joel 3:10ESV·traditional attribution

Beat your plowshares into swords, and your pruning hooks into spears; let the weak say, “I am a warrior.”

John Calvin Reformed @genevareformer

He afterwards adds, Beat your plowshares into swords. When Isaiah and Micah prophesied of the kingdom of Christ, they said, ‘Beat your swords into pruninghooks, and your spears into plowshares’, (Isaiah 2:4, Micah 4:3.) This sentence is now inverted by Joel.

Matthew Henry Presbyterian @wholebiblehenry

What the psalmist had long before ordered to be said among the heathen (Psa 96:10) the prophet here will have in like manner to be published to all nations, That the Lord reigns, and that he comes, he comes to judge the earth, as he had long been judging in the earth.

Commenting on Joel 3:9-17

John Gill Reformed Baptist @doctorgill

Beat your ploughshares into swords, and your pruning hooks into spears,.... Let not only soldiers, and such as have been trained up in military discipline, appear in the field on this occasion; but let husbandmen and vinedressers leave their fields and vineyards, and turn their instruments of husbandry and vinedressing into weapons of war; let them not plead want of armour, but convert these to...