Taking vv. 5, 6, along with the passage beginning at ver. 14, we have an ideal picture of the order of movement. One peal, sharply rung out from the trumpets, would signify that the eastern camp, embracing the tribes of Judah, Issachar, and Zebulun, should advance. Then the tabernacle was to be taken down, and the Levites of the families of Gershon and Merari were to set forward with the various parts of the tent and its enclosure. Next two alarms gave the signal to the southern camp, that of Reuben, Simeon, and Gad. The Levites of the family of Kohath followed, bearing the ark, the altar of incense, the great altar, the table of shewbread, and other furniture of the sanctuary. The third and fourth camps, of which Ephraim and Benjamin were the heads, brought up the rear. In these movements the trumpets would be of much use. But it is quite clear that the real difficulty was not to set the divisions in motion each at a fit time. The camps were not composed only of men under military discipline. The women and children, the old and feeble, had to be cared for. The flocks and herds also had to be kept in hand. We cannot suppose that there was any orderly procession; rather was each camp a straggling multitude, with its own delays and interruptions. And so it is in the case of every social and religious movement. Clear enough may be the command to advance, the trumpet of Providence, the clarion of the Gospel. But men and women are undisciplined in obedience and faith. They have many burdens of a personal kind to bear, many private differences and quarrels. How very seldom can the great Leader find prompt response to His will, though the terms of it are distinctly conveyed and the demand is urgent! God makes a plan for us, opens our way, shows us our need, proclaims the fit hours; but our unbelief and fear and incapacity impede the march. Nevertheless, through the grace of His providence, as Israel slowly made its way across the desert and reached Canaan at last, the Church moves, and will continue to move, towards the holy future, the millennial age. Turning now to the uses of the silver trumpets after the settlement in Canaan, there is first that connected with war. The people are presumed to be living peaceably in their country; but some neighbouring power has attacked them. The sounding of the trumpets then is to be of the nature of a prayer to the Divine Protector of the nation. The cry of the dependent tribes will be gathered up, as it were, into the shrill blast which carries the alarm to the throne of the Lord of Hosts. To the army and to the nation assurance is given that the old promise of Jehovah's favour remains in force, and that the promise, claimed by the priests according to the covenant, will be fulfilled. And this will make the trumpet-blast exhilarating, a presage of victory. The claim and hope of the nation rise heavenward. The men of war stand together in faith, and put to flight the armies of the aliens.