Commentaries:
Adam Clarke
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 labor 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 pipiyoth , "mouth mouths."
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