SixCannons,
Great post! One book I wholeheartedly recommend on this subject is "The Fire and the Staff" by Klemet Preus. This is written from a Lutheran perspective but 99% of what is written would be valid for Presbyterian/Reformed/Baptist churches as well.
Essentially the tone of the book is that doctrine and practice are so intricately woven together that when one changes, the other changes as well.


Grace is not common.