וּבָ֨א אַהֲרֹ֤ן וּבָנָיו֙ בִּנְסֹ֣עַ הַֽמַּחֲנֶ֔ה וְהוֹרִ֕דוּ אֵ֖ת פָּרֹ֣כֶת הַמָּסָ֑ךְ וְכִ֨סּוּ־בָ֔הּ אֵ֖ת אֲרֹ֥ן הָעֵדֻֽת׃
אַהרן און זײַנע זין זאָלן קומען בײַם ציִען פֿון לאַגער, און זײ זאָלן אַראָפּנעמען דעם פּרוֹכֶת פֿון צװישנשײד, און צודעקן דערמיט דעם אָרון פֿון געזעץ.
Rashi
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.
Sforno
בנסוע המחנה, after the cloud above it had already withdrawn, for prior to that they were forbidden to enter the Tabernacle.
Rashbam
אהרן ובניו בנסוע המחנה, the two “flags” who journeyed first, ahead of the parts of the prefabricated Tabernacle which had been dismantled and which was being transported by the Levites.
Rabbeinu Bahya
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערSiftei Chakhamim
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערRav Hirsch
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערDa'at Zekenim
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערRashi
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).