Question 81. For whom is the Lord’s supper instituted?
Answer: 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.
Question 82. Are they also to be admitted to this supper, who, by confession and life, declare themselves unbelieving and ungodly?
Answer: No; for by this, the covenant of God would be profaned, and his wrath kindled against the whole congregation; (a) therefore it is the duty of the christian church, according to the appointment of Christ and his apostles, to exclude such persons, by the keys of the kingdom of heaven, till they show amendment of life.
(a) 1 Cor.11:20 When ye come together therefore into one place, this is not to eat the Lord’s supper. 1 Cor.11:34 And if any man hunger, let him eat at home; that ye come not together unto condemnation. And the rest will I set in order when I come. Isa.1:11 To what purpose is the multitude of your sacrifices unto me? saith the LORD: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of he goats. Isa.1:12 When ye come to appear before me, who hath required this at your hand, to tread my courts? Isa.1:13 Bring no more vain oblations; incense is an abomination unto me; the new moons and sabbaths, the calling of assemblies, I cannot away with; it is iniquity, even the solemn meeting. Isa.1:14 Your new moons and your appointed feasts my soul hateth: they are a trouble unto me; I am weary to bear them. Isa.1:15 And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood. Isa.66:3 He that killeth an ox is as if he slew a man; he that sacrificeth a lamb, as if he cut off a dog’s neck; he that offereth an oblation, as if he offered swine’s blood; he that burneth incense, as if he blessed an idol. Yea, they have chosen their own ways, and their soul delighteth in their abominations. Jer.7:21 Thus saith the LORD of hosts, the God of Israel; Put your burnt offerings unto your sacrifices, and eat flesh. Jer.7:22 For I spake not unto your fathers, nor commanded them in the day that I brought them out of the land of Egypt, concerning burnt offerings or sacrifices: Jer.7:23 But this thing commanded I them, saying, Obey my voice, and I will be your God, and ye shall be my people: and walk ye in all the ways that I have commanded you, that it may be well unto you. Ps.50:16 But unto the wicked God saith, What hast thou to do to declare my statutes, or that thou shouldest take my covenant in thy mouth?
–The Heidelberg Catechism