Books like Christian Letters to a Post-Christian World
Dorothy L. Sayers
Christian Letters to a Post-Christian World is 275 pages, about 5 hours 3 minutes at 250 words a minute.
How long Christian Letters to a Post-Christian World takes to read
8 books to read next
How long each takes
Christian Theology 23.7 h 
Christian Theology 10.1 h 
Dogmatics in Outline 2.9 h 
Early Christian Doctrines 9.4 h 
An Essay on the Development of Christian Doctrine 8.2 h 
Systematic Theology 26 min 
Faith Seeking Understanding 6.9 h 
The Foundations of Christian Doctrine 5.9 h Bar height shows length. Estimated at 250 words a minute.