Richard Lischer is the author of two memoirs, Open Secrets: A Memoir of Faith and Discovery and Stations of the Heart: Parting with a Son.
A memoir becomes explicitly Christian when it derives its literary power from the power of the gospel. It doesn't preach, it shows.
Dietrich Bonhoeffer’s Letters and Papers from Prison comes under the category of “Books to Be Read on an Annual Basis”—like Augustine’s Confessions, King Lear, or anything by Flannery O’Connor. In general, we read too many books and return to too few.