Meaning of Lord's Supper

1 Corinthians 11:17-34
Paul praised them for holding to the teaching, just as what Paul passed them. Here Paul did not praise them for their meeting do more harm than good.
Paul taught them the meaning of Lord's Supper. For whenever you eat this bread and drink this cup, you proclaim the Lord's death until he comes.  Therefore, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilt of sinning against the body and blood of the Lord. A man ought to examine himself before he eats of the bread and drinks of the cup.
The disgrace of Corinthians: 1. there are divisions among them. 2. As you eat, each of you goes ahead without waiting for anybody else. One remains hungry, another get drunk.
Paul asked them if hungry should eat at home, so that when you eat together it may not result in judgement. Do you despise the church of God and humiliate those who have nothing?  Church's Supper is fill with love and reverence before the Lord, it is not just for food but for memory of the Lord.
Why?
In the early days the Lord's Supper took place in the course of a communal meal. It was 'bring-and share', with everyone bringing what food they could. But in Corinth the loving, sharing principles has broken down. It is a disgrace- a serious offence. Paul has to remind them of the circumstances in which the first Lords; Supper took place.
Paul praise them first, then pointed out their fault. To remind them with good sequence.
Without waiting: No good manner. Hungry and drunk : Disgrace, No love.
How?
Examine myself before eat of the bread and drink of the cup. Even in pop-luck party of church, I should keep good manner of the table.