The words of v 6 bring to mind a major feature of Yahweh-war in the OT in that the decisive action is that of Yahweh and is not dependent on the strength and power of the Israelites. The panic and fear which Yahweh could spread among the enemy forces were far more deadly than the weapons of the Israelites.

MARVIN TATE, PSALMS 51-100, VOLUME 20 (WORD BIBLICAL COMMENTARY), 42.