Numbers 4:13

Then shall they remove the fat-ashes from the altar, - and spread over it a wrapper of purple;

Exodus 27:1-8

And thou shalt make the altar of acacia wood, - of five cubits length and five cubits breadth four square, shall the altar be, and three cubits the height thereof.

Exodus 39:1

And of the blue and the purple, and the crimson, made they cloths of variegated stuff for ministering in the sanctuary, - and they made the holy garments which were for Aaron, - As Yahweh commanded Moses.

Exodus 39:41

them cloths of variegated stuff, for ministering in the sanctuary, - the holy garments for Aaron the priest, and the garments of his sons for ministering as priests.

Leviticus 6:12-13

And, the fire on the altar, shall be kept burning therein, it shall not be suffered to go out, but the priest shall kindle up thereon pieces of wood, morning by morning, - and shall set in order thereupon the ascending-sacrifice, and shall make a perfume thereon with the fat-pieces of the peace-offerings:

Numbers 4:6-9

and put thereon a covering of badgers skin, and spread a complete wrapper of blue over above, - and put in the staves thereof.

Numbers 4:11-12

And upon the altar of gold, shall they spread a wrapper of blue, and shall cover the same in a covering of badgers skin, - and shall put in the staves thereof,

Treasury of Scripture Knowledge

Summary

And they shall take away the ashes from the altar, and spread a purple cloth thereon:

The embers of the sacred fire seem to have been removed in the grate, which was carried apart from the brazen altar; both being covered from view by purple cloths

General references

Bible References

The embers of the sacred fire seem to have been removed in the grate, which was carried apart from the brazen altar; both being covered from view by purple cloths

Numbers 4:6
and put thereon a covering of badgers skin, and spread a complete wrapper of blue over above, - and put in the staves thereof.
Exodus 27:3
And thou shalt make its pans for removing its ashes, and its shovels and its sprinkling bowls, and its flesh-hooks and its fire-pans, - all its vessels, shalt thou make of bronze.
Exodus 39:1
And of the blue and the purple, and the crimson, made they cloths of variegated stuff for ministering in the sanctuary, - and they made the holy garments which were for Aaron, - As Yahweh commanded Moses.
Leviticus 6:12
And, the fire on the altar, shall be kept burning therein, it shall not be suffered to go out, but the priest shall kindle up thereon pieces of wood, morning by morning, - and shall set in order thereupon the ascending-sacrifice, and shall make a perfume thereon with the fat-pieces of the peace-offerings:

General references

Numbers 4:8
and they shall spread over them a wrapper of crimson, and cover the same with a covering of badgers skin, - and shall put in the staves thereof.