Psalms 149:6

Verse Psalms 149:6. Let the high praises of God] Let them sing songs the most sublime, with the loudest noise consistent with harmony.

And a two-edged sword in their hand] Perhaps there is an allusion here to the manner in which the Jews were obliged to labour in rebuilding the walls of Jerusalem: "Every one with one of his hands wrought in the work, and with the other hand held a weapon," Nehemiah 4:17.

The two-edged sword, in Hebrew, is פיפיות pipiyoth, "mouth mouths."