This episode of Communio Sanctorum is titled, “Liturgy.”What comes to mind when you hear that word – “Liturgy.”Most likely—it brings up various associations for different people. Some find great comfort in what the word connotes because it recalls a time in their life of close connection to God. Others think of empty rituals that obscure, rather than bring closer a sense of the sacred.The following is by no means meant as a comprehensive study of Christian liturgy. Far from it. That would take hours. This is just a thumbnail sketch of the genesis of some of the liturgical traditions of the Church.First off, using a broad-brush the word ‘liturgy’ refers to the order and parts of a service held in a church. Even though most non-denominational, Evangelical churches like the one I’m a part of doesn’t call our order of service on a Sunday morning a “liturgy” – that’s in fact what it is. Technically, the word “Liturgy” means “service.”  But it’s come to refer to all the various parts of a church service, that is, when a local church community gathers for worship. It includes the order the various events occur, how they’re conducted, what scripts are recited, what music is used, which rituals are performed, even what physical objects are employed to conduct them; things like special clothes, furniture, & implements.Even within the same church, there may be different liturgies for different events and seasons of the year.For convenience sake, churches tend to get put into 2 broad categories; liturgical & non-liturgical. Liturgical churches are often also called “high-church” meaning they have a set tradition for the order of the service that includes special vestments for priests & officiants; and follow a pattern for their service that’s been conducted the same way for many years. Certain portions of the Bible are read, then a reading from another treasured tome of that denomination, people sit, stand and kneel at designated times, and clergy follows a set route through the sanctuary.In a non-liturgical church, while they may follow a regular order of service, there’s little of the formalism and ritual used in a high-church service. In many liturgical churches, the message a pastor or priest is to share each week is spelled out by the denominational hierarchy in a manual sent out annually. In a non-liturgical church, the pastor is typically free to pick what he wants to speak on.The great liturgies arose in the 4th to 6th Cs then codified in the 6th & 7th. They were much more elaborate than the order of service practiced in the churches of the 2nd & 3rd Cs.Several factors led to the creation of liturgies àFirst: There’s a tendency to settle on a standard way to say things when it comes to the beliefs & practices of a group. When someone states something well, or does something in an impressive way, it tends to get repeated.Second: Bishops & elders tended to take what they learned in one place and transplanted it wherever they went.Third: A written liturgy made the services more orderly.Fourth: The desire to hold on to what was thought to be passed down by the Apostles became a priority. This worked against any desire for change.Fifth: A devotion to orthodoxy, combined for a concern about heresy tended to sanctify what was old and opposed innovation. Changes in a liturgy sparked controversy.The main liturgies that emerged during the 5th & 6th Cs bear similarities in structure & theme; even in wording, while also having distinct features.The main liturgical traditions can be listed as . . .In the EastThe Alexandrian or sometimes called Egyptian liturgies.The West Syrian family includes the Jerusalem, Clementine, & Constantinoplitan liturgies.The East Syrian family includes the liturgies that were used in the Nestorian churches of the East.In the West, the principal liturgical families were Roman, Gallican, Ambros