Numbers 4:13

King James 3 - The Literal Traslation

And they shall remove the ashes of the altar, and shall spread over it a purple cloth;

Cross References

Exodus 39:1

And from the blue and the purple and the crimson they made woven garments for serving in the sanctuary. And they made the holy garments which were for Aaron, as Jehovah commanded Moses.

Exodus 39:41

the woven garments for serving in the sanctuary, the holy garments for Aaron the priest, and the garments of his sons for serving as priests.

Numbers 4:14

and shall put on it all its vessels with which they minister around it, the fire-pans, the hooks, and the shovels, and the bowls, all the vessels of the altar. And they shall spread a covering of dugong skin on it, and shall put in its staves.