This feminine noun captures the acoustic phenomenon of an advancing army's footsteps. Both biblical occurrences describe the same supernatural event: God instructing David to attack when he hears 'the sound of marching in the tops of the balsam trees,' signaling that the Lord has gone out before him to strike the Philistine army. The term evokes coordinated military movement, likely the rhythmic tramping of many feet. It's a theophanic sign, the audible evidence of heaven's invisible army mobilizing for battle on Israel's behalf.