Numbers 4:4

4:4 This is the service of the Kohathites in the tent of meeting, relating to the most holy things. ¹ 

Numbers 33:36

33:36 They traveled from Ezion-geber and camped in the wilderness of Zin, which is Kadesh.

[4:4]  ¹ tn The Hebrew text simply has “the holy of holies,” or “the holy of the holy things” (קֹדֶשׁ הַקֳּדָשִׁים, qodesh haqqodashim). The context indicates that this refers to all the sacred furnishings.