2 “Make two trumpets of hammered silver for yourself. They are for summoning the community and having the camps set out.
3 Whenever both are sounded, the whole community is to gather toward you at the entrance of the Tent of Meeting.
4 But if only one is sounded, the princes—the heads of the tribes of Israel—are to gather toward you.
5 When you sound the trumpet the first time, the camp of those camped on the east is to set out.
6 When you sound the trumpet blast the second time, the camp of those camped on the south is to set out. Short blasts will be the signal for their moving out.
7 To gather the whole national community, you are to sound the sustained blasts, but not the short blasts.
8 The sons of Aaron, the kohanim will blow the trumpets. This is to be an eternal ordinance for you as well as for your generations to come.