וְאַתָּ֡ה הַפְקֵ֣ד אֶת־הַלְוִיִּם֩ עַל־מִשְׁכַּ֨ן הָעֵדֻ֜ת וְעַ֣ל כָּל־כֵּלָיו֮ וְעַ֣ל כָּל־אֲשֶׁר־לוֹ֒ הֵ֜מָּה יִשְׂא֤וּ אֶת־הַמִּשְׁכָּן֙ וְאֶת־כָּל־כֵּלָ֔יו וְהֵ֖ם יְשָׁרְתֻ֑הוּ וְסָבִ֥יב לַמִּשְׁכָּ֖ן יַחֲנֽוּ׃
поставь левитов над скинией свидетельства и над всей мебелью ее и над всем, что ей принадлежит; они будут носить скинию и всю мебель ее; и будут служить ему и разбивать стан вокруг скинии.
Rashi
וישלחו מן המחנה [COMMAND THE CHILDREN OF ISRAEL] THAT THEY SEND AWAY FROM THE CAMP [EVERY LEPER etc.] — There were three camps one within the other whenever they encamped: the area within the hangings was the “camp of the Shechinah”, the encampment of the Levites round about this, as is described in the Sedrah במדבר סיני (Numbers 1:53), was the “camp of the Levites”, and from there outward up to the end of the encampment of the divisions in all the four directions was the “camp of the Israelites”. The leper was sent out from all of them; the person suffering from a flux was allowed to stay in the “camp of the Israelites”, but was sent out from the two inner camps, whilst a person who had become unclean by reason of a corpse was allowed to stay in the “camp of the Levites” also, and was sent out only from that of the Shechinah. All this have our Rabbis deduced in Treatise Pesachim 67a from the verses of our text.
Chizkuni
הקרב את מטה לוי, “bring the tribe of Levi near;” in chapter 1,50, G-d had already told Moses to appoint that tribe to be in charge of all the furnishings of The Tabernacle as well as the Tabernacle itself and to carry it during the journeys; they had also been warned not to allow any non Levite to come close to the Tabernacle; now that the Levites were to be appointed as performing service for the priests (Aaron and descendants), Moses was commanded to
Chizkuni
לעבוד את עבודת המשכן, “to perform the service of the Tabernacle.” Details had been spelled out already in 1,50.