Paul wrote his letter to the Corinthians, because they had gotten off track in a number of ways. Paul brought the gospel to the city, and it was received with joy. But then cultural practices got mixed in with the gospel.
Now, God created culture. So, expressing allegiance to Jesus through cultural expression is not necessarily wrong. Scripture can be translated into a people group's heart language. Praise, and worship, can be offered using a particular cultures art forms, music, dance, or poetry.
Jesus translated the Lord's Supper from the Passover. The Passover is celebration of deliverance from slavery in Egypt. The Lord's Supper is a celebration of deliverance from slavery to sin. Jesus took the symbols of Passover -- bread and wine -- and applied them to the context of the new covenant. Unleavened bread, eaten in haste, to his body. Blood on the doorposts and lintels to his blood.
The problem can when the Corinthians connected the Christian celebration with the celebrations done before Christ, and the gospel, came to them. They would have celebrations for the other gods. They have to be the same, right?
Of course, they were not the same. The pagan feast focused on me having a good time. The Lord's Supper focused on everyone's need, because of sin in everyone's life. The Lord's Supper focused on Christ's work of redemption, which we all need, and which we all received.
So, if someone is more concerned about how much food is piled on his plate, while others have none, then we have one more symptom of division. If we are all part of God's family, then it should matter than some of the children are provided for, and some are not.
A prominent theme in this letter is unity. How meetings, and other practices, are handled, demonstrates how all people are viewed. And we need to look at ourselves, make sure our hearts are right before God, so we act, and respond, rightly, with love, and unity, toward others.
