Numbers 10:6-8

Modern English Version

⁶ When you blow an alarm the second time, then the camps that lie on the south will set out. They will blow an alarm for their setting out. ⁷ But when the assembly is to be gathered together, you will blow, but you will not sound an alarm.

⁸ The sons of Aaron, the priests, will blow the trumpets, and they will be to you as an ordinance forever throughout your generations.