(2) There are none more proud than they that least know themselves.

(3) Excommunication ought not to be committed to one man's power, but must be done by the authority of the whole congregation, after the matter is diligently examined.
(a) In mind, thought, and will.

(b) Calling upon Christ's name.
(4) There is no doubt that the judgment is ratified in heaven, in which Christ himself sits as Judge.

(5) The one who is excommunicated is delivered to the power of Satan, in that he is cast out of the house of God.
(c) What it is to be delivered to Satan the Lord himself declares when he says, "Let him be unto thee as a heathen and publican"; (Mt 18:17). That is to say, to be disfranchised and put out of the right and privileges of the city of Christ, which is the Church, outside of which Satan is lord and master.
(6) The goal of excommunication is not to cast away the excommunicate that he should utterly perish, but that he may be saved, that is, that by this means his flesh may be tamed, that he may learn to live to the Spirit.

(7) Another goal of excommunication is that others are not infected, and therefore it must of necessity be retained in the Church, so that one is not infected by the other.
(d) Is nothing and not grounded upon good reason, as though you were excellent, and yet there is such wickedness found among you.

5:7 ⁸ Purge out therefore the old leaven, that ye may be a new ^e lump, as ye are unleavened. For even Christ our ^f passover is sacrificed for us:

(8) By alluding to the ceremony of the passover, he exhorts them to cast out that unclean person from among them. In times past, he says, it was not lawful for those who celebrated the passover to eat unleavened bread, insomuch that he was held as unclean and unworthy to eat the passover, whoever had but tasted of leaven. Now our whole life must be as it were the feast of unleavened bread, in which all they that are partakers of that immaculate lamb which is slain, must cast out both of themselves, and also out of their houses and congregations, all impurity.
(e) By lump he means the whole body of the Church, every member of which must be unleavened bread, that is, be renewed in spirit, by plucking away the old corruption.
(f) The Lamb of our passover.

(g) Let us lead our whole life as it were a continual feast, honestly and uprightly.

(9) Now he speaks more generally: and that which he spoke before of the incestuous person he shows that it pertains to others, who are known to be wicked and those who through their wicked life are a slander to the Church, who ought also by lawful order be cast out of the community of the Church. And making mention of eating meals, either he means that feast of love at which the supper of the Lord was received, or else their common usage and manner of life. And this is to be properly understood, lest any man should think that either matrimony was broken by excommunication, or such duties hindered and cut off by it, as we owe one to another: children to their parents, subjects to their rulers, servants to their masters, and neighbour to neighbour, to win one another to God.

(h) If you should utterly abstain from such men's company, you should go out of the world. Therefore I speak of those who are in the very bosom of the Church, who must be brought back into order by discipline, and not of those who are outside of the Church, with whom we must labour by all means possible, to bring them to Christ.

(10) Those who are false brethren ought to be cast out of the congregation. As for those who are outside of it, they must be left to the judgment of God.