Numbers 10:1-3 Modern English Version (MEV)
The Silver Trumpets
10 And the Lord spoke to Moses, saying: 2 Make for yourself two silver trumpets. Of a hammered work you will make them, and you will use them for summoning of the assembly and directing the breaking up of the camps. 3 When they blow both of them, all the assembly will assemble themselves to you at the door of the tent of meeting.