Numbers 4:10-12

10Then they are to wrap it and all its accessories in a covering of the durable leather and put it on a carrying frame.

11“Over the gold altar they are to spread a blue cloth and cover that with the durable leather and put the poles in place.

12“They are to take all the articles used for ministering in the sanctuary, wrap them in a blue cloth, cover that with the durable leather and put them on a carrying frame.