1 Corinthians 10:21

You cannot drink both the Cup of the Lord and the cup of demons. You cannot partake at the Table of the Lord and at the table of demons.

1 Corinthians 11:21-22

For, as you eat, each of you tries to secure his own supper first, with the result that one has too little to eat, and another has too much to drink!

1 Corinthians 11:27-32

Therefore, whoever eats the bread, or drinks the Lord's cup, in an irreverent spirit, will have to answer for an offence against the Lord's body and blood.

Treasury of Scripture Knowledge

Summary

Ye offer polluted bread upon mine altar; and ye say, Wherein have we polluted thee? In that ye say, The table of the LORD is contemptible.

Bible References

The table

1 Corinthians 10:21
You cannot drink both the Cup of the Lord and the cup of demons. You cannot partake at the Table of the Lord and at the table of demons.
1 Corinthians 11:21
For, as you eat, each of you tries to secure his own supper first, with the result that one has too little to eat, and another has too much to drink!