Canons 20-22 deal with fast-days, daily services in church, and the fast of the passover-week. Canon 23 seems as if it closed the series, speaking, as it does, of "our brethren the bishops" who in their cities have made regulations "according to the commands of our fathers the apostles": "let none of our successors alter them; because it saith that the teaching is greater than the sea, and hath no end." We pass on, however, to regulations about the sick (24) who are to be visited by the bishop, "because it is a great thing for the sick that the high-priest should visit them (for the shadow of Peter healed the sick)." Canons 25-27 deal again with prayers and church-services. The "seven hours" are specified, with reasons for their observance (25): attendance at sermons is urged (26), "for the Lord is in the place where his lordship is proclaimed" (comp. _Didache_ 4, part of the _Two Ways_). When there are no prayers in church, reading at home is enjoined (27): "let the sun each morning see the book upon thy knees" (comp. Ath. _Ad virg._, S 12, "Let the sun when he ariseth see the book in thy hands"). Prayer must be preceded by the washing of the hands. "No believer must take food before communicating, especially on fast-days": only believers may communicate (28). The sacred elements must be guarded, "lest anything fall into the cup, and it be a sin unto death for the presbyters." No crumb must be dropped, "lest an evil spirit get possession of it." Canons 30-35 contain various rules, and specially deal with suppers for the poor (i.e. _agapae_) and memorial feasts. Then we have a prayer for the offering of first-fruits (36); a direction that ministers shall wear fair garments at "the mysteries" (37); and a command to watch during the night of the resurrection (38). The last canon hereupon passes into a general exhortation to right living, which forms a sixth part of the whole book. In Riedel's translation we read this for the first time as a connected whole. It falls into two parts, and describes, first, the true life of ordinary Christians, warning them against an empty profession, and laying down many precepts of morality; and then it addresses itself to the "ascete" who "wishes to belong to the rank of the angels," and who lives a life of solitude and poverty. He is encouraged by an exposition, on somewhat strange lines, of the temptations of our Lord, and is specially warned against spiritual pride and contempt of other men. The book closes with an appeal for love and mutual service, based on the parables in St Matthew xxv.