Numbers 10:2

2Make two silver trumpets. Of hammered work you shall make them, and you shall use them for asummoning the congregation and for breaking camp.

Numbers 10:5-6

5When you blow an alarm, bthe camps that are on the east side shall set out. 6And when you blow an alarm the second time, cthe camps that are on the south side shall set out. An alarm is to be blown whenever they are to set out.
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