The Church Orders are an interesting series of manuals in The Ancient Church Orders. A. J. Maclean makes them better known to the modern reader, and explains the extent to which they throw light on early Christian worship and customs.

Maclean covers numerous aspects of church order, basing his study on various traditions including Greek, Ethiopic, Syriac and Arabic. The book covers church building and worship, the ministry and ordination, baptism and confirmation, festivals, and fasts.