Berthoff, Ann E., et al. “Interchanges: Spiritual Sites of Composing.” College Composition and Communication 45 (1994): 237-63.
A couple weeks ago I picked up a dozen or so CCC journals (mostly from the early 90s, I think) outside the English department (an instructor had left them for anyone to take — and what a surprise, no student had taken them! :-)). Last night I picked up May 1994 (see above) and was pretty excited to read some stuff on the role of religion in writing (including the need to understand the theological side of Freire’s work).
And here’s a related bibliography: Christian Rhetoric Theory & Composition Pedagogy.