Numbers 10:4-6

Young's Literal Translation

⁴ And if with one they blow, then have the princes, heads of the thousands of Israel, met together unto thee;

⁵ `And ye have blown -- a shout, and the camps which are encamping eastward have journeyed.

⁶ `And ye have blown -- a second shout, and the camps which are encamping southward have journeyed; a shout they blow for their journeys.