Numbers 4:11

And over the golden altar they shall spread a cloth of blue and cover it with a covering of goatskin , and shall put in its poles .

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

And upon the golden altar they shall spread a cloth of blue, and cover it with a covering of badgers' skins, and shall put to the staves thereof: