Hebrews 13:10

we have an altar, of which to eat they have no authority who the tabernacle are serving,

1 Corinthians 9:13

Have ye not known that those working about the things of the temple -- of the temple do eat, and those waiting at the altar -- with the altar are partakers?

Numbers 3:7-8

and kept his charge, and the charge of all the company before the tent of meeting, to do the service of the tabernacle;

Numbers 7:5

'Receive from them, and they have been to do the service of the tent of meeting, and thou hast given them unto the Levites, each according to his service.'

1 Corinthians 5:7-8

cleanse out, therefore, the old leaven, that ye may be a new lump, according as ye are unleavened, for also our passover for us was sacrificed -- Christ,

1 Corinthians 10:17-18

because one bread, one body, are we the many -- for we all of the one bread do partake.

1 Corinthians 10:20

no, but that the things that the nations sacrifice -- they sacrifice to demons and not to God; and I do not wish you to come into the fellowship of the demons.

Treasury of Scripture Knowledge

Summary

We have an altar, whereof they have no right to eat which serve the tabernacle.

Bible References

An altar

1 Corinthians 5:7
cleanse out, therefore, the old leaven, that ye may be a new lump, according as ye are unleavened, for also our passover for us was sacrificed -- Christ,
1 Corinthians 9:13
Have ye not known that those working about the things of the temple -- of the temple do eat, and those waiting at the altar -- with the altar are partakers?
1 Corinthians 10:17
because one bread, one body, are we the many -- for we all of the one bread do partake.

Serve

Numbers 3:7
and kept his charge, and the charge of all the company before the tent of meeting, to do the service of the tabernacle;
Numbers 7:5
'Receive from them, and they have been to do the service of the tent of meeting, and thou hast given them unto the Levites, each according to his service.'

General references

Exodus 37:25
And he maketh the perfume-altar of shittim wood; a cubit its length, and a cubit its breadth (square), and two cubits its height; its horns have been of the same;
Exodus 40:6
and hast put the altar of the burnt-offering before the opening of the tabernacle of the tent of meeting,
Isaiah 19:19
In that day there is an altar to Jehovah In the midst of the land of Egypt, And a standing pillar near its border to Jehovah,
Luke 5:38
but new wine into new skins is to be put, and both are preserved together;