כֹּ֤תּוּ אִתֵּיכֶם֙ לַֽחֲרָב֔וֹת וּמַזְמְרֹֽתֵיכֶ֖ם לִרְמָחִ֑ים הַֽחַלָּ֔שׁ יֹאמַ֖ר גִּבּ֥וֹר אָֽנִי׃
Beat your plowshares into swords, And your pruning-hooks into spears; Let the weak say: ‘I am strong.’
Read midrashic interpretation of Joel 4:10: and classical rabbinic exegesis.