Numbers 10:6-8

World English Bible

⁶ When you blow an alarm the second time, the camps that lie on the south side shall go forward. They shall blow an alarm for their journeys. ⁷ But when the assembly is to be gathered together, you shall blow, but you shall not sound an alarm.

⁸ “The sons of Aaron, the priests, shall blow the trumpets. This shall be to you for a statute forever throughout your generations.