(Isa 2, 2-5) Let us walk in the light of the LORD!
[2] In days to come, The mountain of the LORD'S house shall be established as the highest mountain and raised above the hills. All nations shall stream toward it; [3] many peoples shall come and say: "Come, let us climb the LORD'S mountain, to the house of the God of Jacob, That he may instruct us in his ways, and we may walk in his paths." For from Zion shall go forth instruction, and the word of the LORD from Jerusalem. [4] He shall judge between the nations, and impose terms on many peoples. They shall beat their swords into plowshares and their spears into pruning hooks; One nation shall not raise the sword against another, nor shall they train for war again. [5] O house of Jacob, come, let us walk in the light of the LORD!
(CCC 64) Through the prophets, God forms his people in the hope of salvation, in the expectation of a new and everlasting Covenant intended for all, to be written on their hearts (Cf Isa 2:2-4; Jer 31:31-34; Heb 10:16). The prophets proclaim a radical redemption of the People of God, purification from all their infidelities, a salvation which will include all the nations (Cf. Ezek 36; Isa 49:5-6; 53:11). Above all, the poor and humble of the Lord will bear this hope. Such holy women as Sarah, Rebecca, Rachel, Miriam, Deborah, Hannah, Judith and Esther kept alive the hope of Israel's salvation. The purest figure among them is Mary (Cf. Zeph 2:3; Lk 1:38). (CCC 2317) Injustice, excessive economic or social inequalities, envy, distrust, and pride raging among men and nations constantly threaten peace and cause wars. Everything done to overcome these disorders contributes to building up peace and avoiding war: Insofar as men are sinners, the threat of war hangs over them and will so continue until Christ comes again; but insofar as they can vanquish sin by coming together in charity, violence itself will be vanquished and these words will be fulfilled: "they shall beat their swords into plowshares, and their spears into pruning hooks; nation shall not lift up sword against nation, neither shall they learn war any more" (GS 78 § 6; cf. Isa 2:4).