11:18. For first of all I hear that when you come together in the church, there are schisms among you. And in part I believe it.
11:19. For there must be also heresies: that they also, who are approved may be made manifest among you.
There must be also heresies… By reason of the pride and perversity of man's heart; not by God's will or appointment; who nevertheless draws good out of this evil, manifesting, by that occasion, who are the good and firm Christians, and making their faith more remarkable.
11:20. When you come therefore together into one place, it is not now to eat the Lord's supper.
The Lord's supper… So the apostle here calls the charity feasts observed by the primitive Christians; and reprehends the abuses of the Corinthians, on these occasions; which were the more criminal, because these feasts were accompanied with the celebrating of the eucharistic sacrifice and sacrament.
11:21. For every one taketh before his own supper to eat. And one indeed is hungry and another is drunk.
11:22. What, have you no houses to eat and to drink in? Or despise ye the church of God and put them to shame that have not? What shall I say to you? Do I praise you? In this I praise you not.
11:23. For I have received of the Lord that which also I delivered unto you, that the Lord Jesus, the same night in which he was betrayed, took bread,
11:24. And giving thanks, broke and said: Take ye and eat: This is my body, which shall be delivered for you. This do for the commemoration of me.
11:25. In like manner also the chalice, after he had supped, saying: This chalice is the new testament in my blood. This do ye, as often as you shall drink, for the commemoration of me.