[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. [8] And the sons of Aaron, the priests, shall blow with the trumpets; and they shall be to you for an ordinance for ever throughout your generations. [9] And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before the LORD your God, and ye shall be saved from your enemies.