Complex sentence: Praxis is a key to understanding the Byzantine tradition, which is observed by the Eastern Orthodox Church and some Eastern Catholic Churches, because praxis is the basis of the understanding of faith and works as conjoint, without separating the two.
Split into simpler sentences: Praxis is a key to understanding the Byzantine tradition, which is observed by the Eastern Orthodox Church and some Eastern Catholic Churches. This is because praxis is the basis of the understanding of faith and works as conjoint, without separating the two.