Numbers 10:6-8

Douay-Rheims 1899 American Edition

⁶ And at the second sounding and like noise of the trumpet, they who lie on the south side shall take up their tents. And after this manner shall the rest do, when the trumpets shall sound for a march.

⁷ But when the people is to be gathered together, the sound of the trumpets shall be plain, and they shall not make a broken sound.

⁸ And the sons of Aaron the priest shall sound the trumpets: and this shall be an ordinance for ever in your generations.