Numbers 10:2-4

ISV(i) 2 “Make two trumpets, crafting them from beaten silver, for use in calling the congregation together and for notifying the camps to set out for travel. 3 Sound them when the whole assembly is to gather together at the entrance to the appointed place of meeting. 4 When one trumpet is blown, the elders and the heads of the thousands of the Israelis are to gather to you.