We often speak loosely about "the Church". I fear I do it myself. In a prim, schoolmasterly fashion, I would like to sugest some rather important precisions.
(1) The Church, the Body of Christ, consists of the Church Triumphant; the Church Exspectant; the Church Militant. Heaven; Purgatory; Earth. We use "the Church" so commonly when we are talking only about the Chrch Militant.
The tempter Screwtape writes to a junior tempter: "One of our greatest allies ... is the Church itself. ... I do not mean the Church as we see her spread out through all time and space and rooted in eternity, terrible as an army with banners. That ... is a spectacle which makes our boldest tempters uneasy. But fortunately it is quite invisible to these humans. All your patient sees is the half-finished sham Gothic erection ... the local grocer with an oily expression on his face bustling up to offer him one shiny little book containing a liturgy which neither of them understands and one shabby little book containing corrupt texts of a number of religious lyrics, mostly bad ... When he gets to his pew and looks around him he sees just that selection of his neighbours whom he has hitherto avoided..."etc., Letter 2.
The awareness that the Church is so much more than merely the Church Militant, owes, I think, a lot to the appropriation of this important truth by Anglo-Catholic writers of the twentieth century from Orthodox writers.
(2) Sometimes we talk about "the Church" when we mean, within the Church Militant, the Latin Church. Latin Christianity is not the only cultural, theological, liturgical tradition, even among those Christians who are in full communion with the See of S Peter.