13 and seven priests bearing seven trumpets of the jubilee before the ark of Jehovah are walking, going on, and they have blown with the trumpets—and he who is armed is going before them, and he who is gathering up is going behind the ark of Jehovah—going on and blowing with the trumpets.
Matthew Henry's Commentary on Joshua 6:13
Commentary on Joshua 6:6-16
(Read Joshua 6:6-16)
Wherever the ark went, the people attended it. God's ministers, by the trumpet of the everlasting gospel, which proclaims liberty and victory, must encourage the followers of Christ in their spiritual warfare. As promised deliverances must be expected in God's way, so they must be expected in his time. At last the people were to shout: they did so, and the walls fell. This was a shout of faith; they believed the walls of Jericho would fall. It was a shout of prayer; they cry to Heaven for help, and help came.