10:1-10 Israel needed signals that were loud and clear so that the tribes could receive instructions. Two silver trumpets provided a simple, effective means to signal all the tribes to move. • These trumpets were not the ram’s horns (Hebrew shopar) mentioned frequently in the Old Testament (e.g., Josh 6:4-6); they were fashioned by Israelite craftsmen from hammered silver brought out of Egypt.

10:13-28 The order of march is different here than in 2:3-34, which specifies that all three clans of Levites were to carry the Tabernacle and its furnishings in the middle of the troop, between the groups headed by Judah and Reuben and the groups headed by Ephraim and Dan. Here, the Gershonites and Merarites carried the components of the Tabernacle structure between Judah and Reuben, and the Kohathites carried the most sacred furniture between Reuben and Ephraim. This useful arrangement allowed time for the Gershonites and Merarites to set up the Tabernacle before the Kohathites arrived with the sacred objects. It also provided security for their special cargo, and it spread the Levites out among the tribes, perhaps enhancing the leavening effect of their influence (cp. Matt 13:33; 16:6, 11-12; 1 Cor 5:6-7).