Numbers 10:1-6

¹And the LORD spake unto Moses, saying,

²Make thee two trumpets of silver; of a whole piece shalt thou make them: that thou mayest use them for the calling of the assembly, and for the journeying of the camps.

³And when they shall blow with them, all the assembly shall assemble themselves to thee at the door of the tabernacle of the congregation.

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

⁵When ye blow an alarm, then the camps that lie on the east parts shall go forward.

⁶When ye blow an alarm the second time, then the camps that lie on the south side shall take their journey: they shall blow an alarm for their journeys.