Numbers 4:13

And they shall anoint the altar, and spread upon it a purple garment:

Exodus 27:1-8

And make the altar acacia wood, five cubits the length, and five cubits the breadth; and the altar shall be quadrated: and three cubits its height

Exodus 39:1

And from the cerulean purple, and the red purple, and the double scarlet, they made garments of stuff to serve in the holy place; and they will make the garments of the holy place which are for Aaron, as Jehovah commanded Moses.

Exodus 39:41

The garments of stuff to serve in the holy place, and the garments of the holy place for Aaron the priest, and the garments of his sons to be priests.

Leviticus 6:12-13

And the fire upon the altar shall burn in it; and it shall not go out: and the priest burnt wood upon it in the morning, in the morning, and he arranged upon it the burnt-offering; and burnt upon it the fat of the peace.

Numbers 4:6-9

And they gave upon it a covering of tahash skins, and they spread over a garment wholly cerulean purple from above, and they put up its bars.

Numbers 4:11-12

And upon the altar of gold they will spread a garment cerulean purple, and they covered it with a tahash skin covering, and they set up its bars.

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 they gave upon it a covering of tahash skins, and they spread over a garment wholly cerulean purple from above, and they put up its bars.
Exodus 27:3
And make pots for its ashes, and its shovels, and its vessels, and its flesh hooks, and its fire pans: and for all its vessels, thou shalt make brass.
Exodus 39:1
And from the cerulean purple, and the red purple, and the double scarlet, they made garments of stuff to serve in the holy place; and they will make the garments of the holy place which are for Aaron, as Jehovah commanded Moses.
Leviticus 6:12
And the fire upon the altar shall burn in it; and it shall not go out: and the priest burnt wood upon it in the morning, in the morning, and he arranged upon it the burnt-offering; and burnt upon it the fat of the peace.

General references

Numbers 4:8
And they spread upon them a garment of double scarlet, and they covered it with a cover of tahash skins, and they put up the bars.