民数記 4:5

ובא אהרן ובניו וגו׳ AND [WHEN THE CAMP SETTETH FORWARD,] AARON SHALL COME, AND HIS SONS, etc. — They shall put every object into its wrapping that is prescribed for it in this section, so that the sons of Kohath should have nothing to do except to carry them. בנסוע המחנה WHEN THE CAMP SETTETH FORWARD — When the cloud departed they knew that they were to set out on the journey (see Rashi on Numbers 1:51, and Note thereon).

and when the camp sets forward, Aharon shall come, and his sons, and they shall take down the veil of the screen, and cover the ark of testimony with it:

וּבָ֨א אַהֲרֹ֤ן וּבָנָיו֙ בִּנְסֹ֣עַ הַֽמַּחֲנֶ֔ה וְהוֹרִ֕דוּ אֵ֖ת פָּרֹ֣כֶת הַמָּסָ֑ךְ וְכִ֨סּוּ־בָ֔הּ אֵ֖ת אֲרֹ֥ן הָעֵדֻֽת׃