וְשָׁפַט֙ בֵּ֣ין הַגּוֹיִ֔ם וְהוֹכִ֖יחַ לְעַמִּ֣ים רַבִּ֑ים וְכִתְּת֨וּ חַרְבוֹתָ֜ם לְאִתִּ֗ים וַחֲנִיתֽוֹתֵיהֶם֙ לְמַזְמֵר֔וֹת לֹא־יִשָּׂ֨א ג֤וֹי אֶל־גּוֹי֙ חֶ֔רֶב וְלֹא־יִלְמְד֥וּ ע֖וֹד מִלְחָמָֽה׃ (פ)
And He shall judge between the nations, And shall decide for many peoples; And they shall beat their swords into plowshares, And their spears into pruninghooks; Nation shall not lift up sword against nation, Neither shall they learn war any more.
Read halakhic rulings (Jewish law) on Isaiah 2:4: and classical halakhic sources.