Mark is the editor of Christianity Today, and author of a few books. He’s an Anglican by denomination but mostly a “mere Christian” in the C.S. Lewis sense, but with a Lutheran cast. Perhaps you can make sense of all that. He doesn’t know if he can, but there you have it.
For those who don’t know him, his main interest is to think about how grace can be found in, with, and under all of creation, and how the great biblical and spiritual truths of the Christian faith can help us navigate this life.