Numbers 10:2-11

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.

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 with 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 the LORD your God, and ye shall be saved from your enemies.

¹⁰Also in the day of your gladness, and in your appointed seasons, and in your new moons, ye shall blow with the trumpets over your burnt-offerings, and over the sacrifices of your peace-offerings; and they shall be to you for a memorial before your God: I am the LORD your God.'

¹¹And it came to pass in the second year, in the second month, on the twentieth day of the month, that the cloud was taken up from over the tabernacle of the testimony.