Numbers 4:5

4:5 When it is time for the camp to journey, Aaron and his sons must come and take down the screening curtain and cover the ark of the testimony with it.

Numbers 4:9

4:9 “They must take a blue cloth and cover the lampstand of the light, with its lamps, its wick-trimmers, its trays, and all its oil vessels, with which they service it.

Numbers 4:12

4:12 Then they must take all the utensils of the service, with which they serve in the sanctuary, put them in a blue cloth, cover them with a covering of fine leather, and put them on a carrying beam.