I. A challenge given to all the enemies of God's kingdom to do their worst. To signify to them that God is preparing war against them, they are called upon to prepare war against him, v. 9-11. When the hour of God's judgment shall come effectual methods shall be taken to gather all nations to the battle of that great day of God Almighty, Rev. xvi. 14; xx. 8. It seems to be here spoken ironically: "Proclaim you this among the Gentiles; let all the forces of the nations be summoned to join in confederacy against God and his people." It is like that, Isa. vii. 9, "Associate yourselves, O you people! and gird yourselves, but you shall be broken to pieces. Prepare war; muster up all your strength; wake up the mighty men; call them into your service; excite them to vigilance and resolution; let all the men of war draw near. Let them come and enter the lists with Omnipotence if they dare; let them not complain for want of weapons, but let them beat their ploughshares into swords and their pruning-hooks into spears. Let them resolve, if they will, never to return to their husbandry again, but either to conquer or die; let none plead unfitness to bear arms, but let the weak say, I am strong and will venture into the field of battle." Thus does a God of almighty power bid defiance to all the opposition of the powers of darkness; let the heathen rage, and the kings of the earth take counsel together, against the Lord and his Christ; let them assemble, and come, and gather themselves together; but he that sits in heaven shall laugh at them, and, while he thus calls them, he has them in derision, Ps. ii. 1, 4. The heathen must be wakened, must be raised from the dead, that they may come up to the valley of Jehoshaphat, to receive their doom (v. 12), may come up out of their graves, come up into the air, to meet the Lord there. Jehoshaphat signifies the judgment of the Lord. Let them come to the place of God's judgment, which perhaps is the chief reason for the using of this name here, but it is put together as a proper name for the sake of allusions to the place so called, which we observed before; let them come thither where God will sit to judge the heathen, to that throne of glory before which shall be gathered all nations (Matt. xxv. 32), for before the judgment-seat of Christ we must all appear. The challenge (v. 9) is turned into a summons, v. 12. It is not only, Come if you dare, but You shall come whether you will or no, for there is no escaping the judgments of God.