The memorandum treats of four things, and four only--the Holy Supper of our Lord (_la Saincte Cène de Nostre Seigneur_), singing in public worship, the religious instruction of children, and marriage. In every rightly ordered church, it is said, the Holy Supper ought to be celebrated frequently, and well attended. It ought to be dispensed every Lord's Day at least;[115] such was the practice in the Apostolic Church, and ought to be ours; the celebration is a great comfort to all believers, for in it they are made partakers of the Body and Blood of Jesus, of His death, of His life, of His Spirit, and of all His benefits. But the present weakness of the people makes it undesirable to introduce so sweeping a change, and therefore it is proposed that the Holy Supper be celebrated once each month "in one of the three places where sermons are now delivered--in the churches of St. Peter, St. Gervais, and de Rive." The celebration, however, ought to be for the whole Church of Geneva, and not simply for those living in the quarters of the town where these churches are. Thus every one will have the opportunity of monthly communion. But if unworthy partakers approach the Table of the Lord, the Holy Supper will be soiled and contaminated. To prevent this, the Lord has placed the _discipline de l'excommunication_ within His Church in order to maintain its purity, and this ought to be used. Perhaps the best way of exercising it is to appoint men of known worth, dwelling in different quarters of the town, who ought to be trusted to watch and report to the ministers all in their neighbourhood who despise Christ Jesus by living in open sin. The ministers ought to warn all such persons not to come to the Holy Supper, and the discipline of excommunication only begins when such warnings are unheeded. Congregational singing of Psalms ought to be part of the public worship of the Church of Christ; for Psalms sung in this way are really public prayers, and when they are sung hearts are moved and worshippers are incited to form similar prayers for themselves, and to render to God the like praises with the same loving loyalty. But as all this is unusual, and the people need to be trained, it may be well to select children, to teach them to sing in a clear and distinct fashion in the congregation, and if the people listen with all attention and follow "with the heart what is sung by the mouth," they will, "little by little, become accustomed to sing together" as a congregation.[116] It is most important for the due preservation of purity of doctrine that children from their youth should be instructed how to give a reason for their faith, and therefore some simple catechism or confession of faith ought to be prepared and taught to the children. At "certain seasons of the year" the children ought to be brought before the pastors, who should examine them and expound the teachings of the catechism.