For whom is the Lord's supper instituted?

For those who are truly sorrowful for their sins, and yet trust that these are forgiven them for the sake of Christ; and that their remaining infirmities are covered by his passion and death; and who also earnestly desire to have their faith more and more strengthened, and their lives more holy; but hypocrites, and such as turn not to God with sincere hearts, eat and drink judgment to themselves. (a)

(a) 1 Cor.10:19 What say I then? that the idol is any thing, or that which is offered in sacrifice to idols is any thing? 1 Cor.10:20 But I say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils. 1 Cor.10:21 Ye cannot drink the cup of the Lord, and the cup of devils: ye cannot be partakers of the Lord's table, and of the table of devils. 1 Cor.10:22 Do we provoke the Lord to jealousy? are we stronger than he? 1 Cor.11:28 But let a man examine himself, and so let him eat of that bread, and drink of that cup. 1 Cor.11:29 For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body.