Numbers 10:3-5

King James Version

³ And when they shall blow with them, all the assembly shall assemble themselves to thee at the door of the tabernacle of the congregation.

⁴ And if they blow but with one trumpet, then the princes, which are heads of the thousands of Israel, shall gather themselves unto thee.

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