Realistically, how much knowledge of the Bible and theology do we have the right to expect of church members? Sure, the answer will vary by tradition to some extent.

For me this is a question of how the church does or does not shape or inform the worldview of church members. For example, for Orthodox believers, what does it mean in everyday life that the Eucharist is a sacrifice? That they feast on the Word of God made flesh? Does it have any everyday significance?