Reformation folk are often charged with "having no doctrine of sanctification." To answer this charge, Lutheran theologian William Hordern writes his masterful little Living by Grace.
Much of the book is analysis of why so many of us Christians "measure Christianity" this way. It is to be expected of the non-Christian, because our behavior is all he or she notices (if he or she evaluated by doctrine, he or she would likely become a Christian!) But a lot of the charge traces back to Rome and to Wesley, so the issue is all too often within the circle of Christianity more than it is an issue to the non-Christian (with the exception of the theme that "...the church is filled with hypocrites.")
Dr. Hordern doesn't have a Biblical view of Scripture's inspiration and inerrancy, but you can just "read over" such paragraphs. On what the Reformers called "the material principle [the Gospel]," he is extremely insightful.
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