Numbers 10:5-7

King James Version

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

⁶ When 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.

⁷ But when the congregation is to be gathered together, ye shall blow, but ye shall not sound an alarm.