Eastern Orthodoxy a Challenge to Evangelical...

Protestantism:

Much of Protestant apologetics against liturgical and sacramental theology has traditionally focused on a historical approach against “Catholic inventions,” which is manifestly flawed. More recent Protestant responses to Eastern Orthodoxy often assumes that by the year 1054 AD (the year traditionally given for the East-West Schism) the Eastern Church had had plenty of time to fall into apostasy. The Coptic Church demonstrates that a liturgical and sacramental theology permeated the Christian Church 600 years before the East-West Schism. At the very least, we can say that at the time of the Council of Chalcedon (451 AD), a Protestant theological approach is light years away. Did it exist before then? Were there Christians in the Early Church who looked like the Evangelicals of today? If so, they left no mark in either the Ancient Churches nor in the writings of the Church Fathers in East or West.

There's video of a Coptic Mass up, as well.