Numbers 4:5-8

5“When the camp prepares to move out, Aaron and his sons shall come into the sanctuary and take down the veil (curtain) screening off the Holy of Holies, and cover the ark of the testimony with it;

6and they shall put on it a covering of porpoise skin (fine leather), and shall spread over that a cloth of pure blue, and shall insert the carrying poles of the ark.

7Over the table of the bread of the Presence they shall spread a cloth of blue and put on it the plates, the dishes [for incense], the sacrificial bowls, the jars for the drink offering, and the continual bread [of the Presence] shall be on it.

8They shall spread over them a cloth of scarlet, and cover that with a covering of porpoise skin, and they shall insert its carrying poles.