Numbers 10:2-4

Amplified Bible, Classic Edition

² Make two trumpets of silver; of hammered or turned work you shall make them, that you may use them to call the congregation and for breaking camp.

³ When they both are blown, all the congregation shall assemble before you at the door of the Tent of Meeting.

⁴ And if one blast on a single trumpet is blown, then the princes or leaders, heads of the tribes of Israel, shall gather themselves to you.