Numbers 4:11-13

4:11 “They must spread a blue cloth on the gold altar, and cover it with a covering of fine leather; and they must insert its poles. 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. 4:13 Also, they must take away the ashes from the altar and spread a purple cloth over it.