Numbers 10:1-5

MSB(i) 1 Then the LORD said to Moses, 2 “Make two trumpets of hammered silver to be used for calling the congregation and for having the camps set out. 3 When both are sounded, the whole congregation is to assemble before you at the entrance to the Tent of Meeting. 4 But if only one is sounded, then the leaders, the heads of the clans of Israel, are to gather before you. 5 When you sound short blasts, the camps that lie on the east side are to set out.