Numbers 10:1–9

And Jehovah spake unto Moses, saying, ²Make thee two trumpets of silver; of beaten work shalt thou make them: and thou shalt use them for the calling of the congregation, and for the journeying of the camps. ³And when they shall blow them, all the congregation shall gather themselves unto thee at the door of the tent of meeting. ⁴And if they blow but 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 take their journey: they shall blow an alarm for their journeys. ⁷But when the assembly is to be gathered together, ye shall blow, but ye shall not sound an alarm. ⁸And the sons of Aaron, the priests, shall blow the trumpets; and they shall be to you for a statute for ever throughout your generations. ⁹And when ye go to war in your land against the adversary that oppresseth you, then ye shall sound an alarm with the trumpets; and ye shall be remembered before Jehovah your God, and ye shall be saved from your enemies.