Numbers 10:5

Overview - Numbers 10
1	The use of the silver trumpets.
11	The Israelites remove from Sinai to Paran.
14	The order of their march.
29	Hobab is entreated by Moses not to leave them.
33	The blessing of Moses at the removing and resting of the ark.

Numbers 10:5  (King James Version)
When ye blow an alarm, then the camps that lie on the east parts shall go forward.