What are the connotations of the (otherwise ssuperfluous) word "Venaflu Lifneichem le'Charev"?
Rashi: It means that the enemy will fall by each other's swords. 1
Seforno: It means that they will fall, not at our hands, but by the sword of Hashem. 2
They will kill each other in their confusion.
Seforno: See Yeshayah, 66:16.