Numbers 10:2-4

American Standard Version

² Make thee two trumpets of silver; of ^[a]beaten work shalt thou make them: and thou shalt use them for the calling of the congregation, and for the journeying of the camps. ³ And when they shall blow them, all the congregation shall gather themselves unto thee at the door of the tent of meeting. ⁴ And if they blow but one, then the princes, the heads of the thousands of Israel, shall gather themselves unto thee.