Presbyterianism has two sacraments, baptism and the Lord's Supper.
In 1538 the ministers took upon themselves to refuse to administer the Lord's Supper in Geneva because the city, as represented by its council, declined to submit to church discipline.
The 41st canon of the council of Carthage enacted that the sacraments of the altar should be received fasting, except on the anniversary of the Lord's supper.
Reason and Scripture seemed to him the only grounds on which a true doctrine of the Lord's supper could be rested.
They read the Greek Testament and the classics; fasted on Wednesday and Friday; received the Lord's Supper every week; and brought all their life under review.