Numbers 4:13

And they shall take away the ashes with the burnt fat from the altar and spread a purple cloth thereon

Exodus 27:1-8

Thou shalt also make an altar of cedar wood, five cubits long and five cubits broad; the altar shall be foursquare, and its height shall be three cubits.

Exodus 39:1

And of the blue and purple and scarlet, they made the clothing of the ministry, to minister in the sanctuary, and in the same manner they made the holy garments for Aaron; as the LORD had commanded Moses.

Exodus 39:41

the clothing of service for ministry in the sanctuary, and the holy garments for Aaron the priest and his sons' garments, to minister in the priesthood.

Leviticus 6:12-13

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

Numbers 4:6-9

and shall put thereon the covering of badgers' skins and shall spread over it a cloth entirely of blue and shall put in the staves thereof.

Numbers 4:11-12

And upon the golden altar they shall spread a cloth of blue and cover it with a covering of badgers' skins 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 shall put thereon the covering of badgers' skins and shall spread over it a cloth entirely of blue and shall put in the staves thereof.
Exodus 27:3
And thou shalt make its pans to receive the ashes with its burnt fat, and its shovels and its basins and its fleshhooks and its firepans; all the vessels thereof thou shalt make of brass.
Exodus 39:1
And of the blue and purple and scarlet, they made the clothing of the ministry, to minister in the sanctuary, and in the same manner they made the holy garments for Aaron; as the LORD had commanded Moses.
Leviticus 6:12
And the fire burning upon the altar shall not be put out, but the priest shall put wood on it every morning and lay the burnt offering in order upon it, and he shall burn upon it the fat of the peace.

General references

Numbers 4:8
And they shall spread upon them a cloth of scarlet and cover the same with a covering of badgers' skins and shall put in the staves thereof.