Num.10.5

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

Num.10.5

When it gives a long blast, that's the signal to march. At the first blast the tribes who were camped on the east set out.

Num.10.5

When a trumpet blast is sounded, the tribes camping on the east are to set out.

Num.10.5

When you sound the advance, the camps that lie on the east side shall then begin their journey.