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׃
Mas tú pondrás á los Levitas en el tabernáculo del testimonio, y sobre todos sus vasos, y sobre todas las cosas que le pertenecen: ellos llevarán el tabernáculo y todos sus vasos, y ellos servirán en él, y asentarán sus tiendas alrededor del tabernáculo.
Akeidat Yitzchak
The Midrash explains that G-d does not need the light of the candelabra, but He wanted us to provide that light in the tabernacle so that He in turn could provide a great light for us in the world of the future. G-d also wishes to demonstrate to mankind at large that those who kindle lights for Him, deserve to have Him light the way for them. In order to enjoy the benefits of the natural guidance of G-d, one needs to be constantly aware of G-d’s guiding hand in history as well as His share in shaping the fate of individuals. The leaders of the people especially, need visible reminders of that. Therefore, leaders, i.e. Levites were encamped around the tabernacle. The priests would be reminded of G-d’s presence and intervention in the fate of man whenever they would look at the eternal flame on the altar. The holy ark was carried physically by the group of Levites of the highest moral fibre. By the awareness of the proximity of G-d, they in turn invoked the hashgachah peratit, Divine involvement at the personal level. This kept all the dangers inherent in an inhospitable climate such as the desert, away from the Israelites. (see our commentary in chapter 34)