Numbers 10:1-6

¹And the LORD spoke unto Moses, saying:

²'Make thee two trumpets of silver; of beaten work shalt thou make them; and they shall be unto thee for the calling of the congregation, and for causing the camps to set forward.

³And when they shall blow with them, all the congregation shall gather themselves unto thee at the door of the tent of meeting.

⁴And if they blow but with one, then the princes, the heads of the thousands of Israel, shall gather themselves unto thee.

⁵And when ye blow an alarm, the camps that lie on the east side shall take their journey.

⁶And when ye blow an alarm the second time, the camps that lie on the south side shall set forward; they shall blow an alarm for their journeys.