Numbers 4:13

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

Exodus 27:1-8

And you shall make an altar of acacia wood, five cubits long, and five cubits broad; the altar shall be foursquare: and the height of it shall be three cubits.

Exodus 39:1

And of the blue, and purple, and scarlet, they made cloths of service, to do service in the holy place, and made the holy garments for Aaron; as the LORD commanded Moses.

Exodus 39:41

The garments of service to do service in the holy place, and the holy garments for Aaron the priest, and his sons' garments, to minister in the priest's office.

Leviticus 6:12-13

And the fire upon the altar shall be burning on it; it shall not be put out: and the priest shall burn wood on it every morning, and lay the burnt offering in order upon it; and he shall burn thereon the fat of the peace offerings.

Numbers 4:6-9

And shall put thereon the covering of badger skins, and shall spread over it a cloth wholly of blue, and shall put in its poles.

Numbers 4:11-12

And upon the golden altar they shall spread a cloth of blue, and cover it with a covering of badger skins, and shall put in its poles:

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 shall put thereon the covering of badger skins, and shall spread over it a cloth wholly of blue, and shall put in its poles.
Exodus 27:3
And you shall make its pans to receive its ashes, and its shovels, and its basins, and its flesh hooks, and its fire pans: all the utensils of it you shall make of bronze.
Exodus 39:1
And of the blue, and purple, and scarlet, they made cloths of service, to do service in the holy place, and made the holy garments for Aaron; as the LORD commanded Moses.
Leviticus 6:12
And the fire upon the altar shall be burning on it; it shall not be put out: and the priest shall burn wood on it every morning, and lay the burnt offering in order upon it; and he shall burn thereon the fat of the peace offerings.

General references

Numbers 4:8
And they shall spread upon them a cloth of scarlet, and cover the same with a covering of badger skins, and shall put in its poles.