Grits
Puritan Board Freshman
Whose theological writings have the best prose to read if you want to be a better writer?
As others have commented, if you are looking strictly at the use of the English language, you an hardly do better than C.S. Lewis, though his theology is problematic. Because language changes over time, I would recommend contemporary authors, say, those of the last 100 years. D.A. Carson's writing is very clear. Richard Phillips and James Montgomery Boice are two other writers whose prose is clear and readable. Francis Schaeffer is another fine author. I very much benefit from the writing of A.W. Pink, but I would not recommend emulating his style. I could list quite a few others, but when you have C.S. Lewis for a model, there is no need to look further.