2 And it will come about in the last days, that the mountain of the Lord will be placed on the top of the mountains, and be lifted up over the hills; and all nations will come to it. 3 And the peoples will say, Come, and let us go up to the mountain of the Lord, to the house of the God of Jacob: and he will give us knowledge of his ways, and we will be guided by his word; for out of Zion the law will go out, and the word of the Lord from Jerusalem. 4 And he will be the judge between the nations, and the peoples will be ruled by his decisions: and their swords will be turned into plough-blades, and their spears into vine-knives: no longer will the nations be turning their swords against one another, and the knowledge of war will be gone for ever.

Matthew Henry's Commentary on Isaiah 2:2-4

Commentary on Isaiah 2:1-9

(Read Isaiah 2:1-9)

The calling of the Gentiles, the spread of the gospel, and that far more extensive preaching of it yet to come, are foretold. Let Christians strengthen one another, and support one another. It is God who teaches his people, by his word and Spirit. Christ promotes peace, as well as holiness. If all men were real Christians, there could be no war; but nothing answering to these expressions has yet taken place on the earth. Whatever others do, let us walk in the light of this peace. Let us remember that when true religion flourishes, men delight in going up to the house of the Lord, and in urging others to accompany them. Those are in danger who please themselves with strangers to God; for we soon learn to follow the ways of persons whose company we keep. It is not having silver and gold, horses and chariots, that displeases God, but depending upon them, as if we could not be safe, and easy, and happy without them, and could not but be so with them. Sin is a disgrace to the poorest and the lowest. And though lands called Christian are not full of idols, in the literal sense, are they not full of idolized riches? and are not men so busy about their gains and indulgences, that the Lord, his truths, and precepts, are forgotten or despised?