Numbers 10:2-4

New International Version

² “Make two trumpets^(A) of hammered silver, and use them for calling the community^(B) together and for having the camps set out.^{(C) 3} When both are sounded, the whole community is to assemble before you at the entrance to the tent of meeting. ⁴ If only one is sounded, the leaders^(D)—the heads of the clans of Israel—are to assemble before you.