Ephraem the Syrian
This indicates the principle of following the cloud, which signifies that whenever the cloud shifts, whether during the day or night, the Israelites will also set forth in accordance with its movement.
But the Levites shall pitch their tents round about the tabernacle, lest there come indignation upon the multitude of the children of Israel, and they shall keep watch, and guard the tabernacle of the testimony.
וְהַלְוִיִּ֞ם יַחֲנ֤וּ סָבִיב֙ לְמִשְׁכַּ֣ן הָעֵדֻ֔ת וְלֹֽא־יִהְיֶ֣ה קֶ֔צֶף עַל־עֲדַ֖ת בְּנֵ֣י יִשְׂרָאֵ֑ל וְשָׁמְרוּ֙ הַלְוִיִּ֔ם אֶת־מִשְׁמֶ֖רֶת מִשְׁכַּ֥ן הָעֵדֽוּת׃
2 Church Fathers comment on this verse
This indicates the principle of following the cloud, which signifies that whenever the cloud shifts, whether during the day or night, the Israelites will also set forth in accordance with its movement.
The Levites seemingly served as the protective force for the Tabernacle, which suggests they were organized in a manner similar to the other tribes of Israel regarding military and traveling provisions. One might consider that a continuous watch was present at the Tabernacle to prevent any potential anger directed at the assembly of the children of Israel, meaning that individuals from other tribes were restricted from approaching the Tabernacle, except during sanctioned events like sacrifices and purifications.
Passages read together with this verse.