"The church is made up of individual believers."
Interesting, sort of Western, way to put it given the rather communal nature of the early Church and the definition of The Church we find in +Ignatius of Antioch's late 1st century writing. That sort of view explains, I think, a lot about where you Protestants are coming from not only in your sola scriptura idea, but indeed on your whole view of faith and church.
In Eastern Christianity one doesn't find the idea of the "individual" member. Its always a liturgical community that we see when we look at The Church rather than a grouping of individuals. This distinction likely goes a long to explaining why Roman Catholicism and Orthodoxy haven't historically formed the basis of democratic societies while Protestantism did.
But of course. Likewise in Catholic West. When people asked Christ how to pray His response was "Our Father...".
He teaches, moreover, to make our prayer common, in behalf of our brethren also. For He says not, "my Father, which art in Heaven," but, "our Father," offering up his supplications for the body in common, and nowhere looking to his own, but everywhere to his neighbor's good. And by this He at once takes away hatred, and quells pride, and casts out envy, and brings in the mother of all good things, even charity, and exterminates the inequality of human things, and shows how far the equality reaches between the king and the poor man, if at least in those things which are greatest and most indispensable, we are all of us fellows. For what harm comes of our kindred below, when in that which is on high we are all of us knit together, and no one has anything more than another; neither the rich more than the poor, nor the master than the servant, neither the ruler than the subject, nor the king than the common soldier, nor the philosopher than the barbarian, nor the skillful than the unlearned? For to all has He given one nobility, having vouchsafed to be called the Father of all alike.