Commentary for Psalms 149:6
רוֹמְמ֣וֹת אֵ֭ל בִּגְרוֹנָ֑ם וְחֶ֖רֶב פִּֽיפִיּ֣וֹת בְּיָדָֽם׃
Let the high praises of God be in their mouth, And a two-edged sword in their hand;
Rashi on Psalms
Lofty praises of God in their throats and they will be for them a double-edged sword.
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