This is one of the most practical lessons you can ever learn. Everyone makes decisions every day and lives with the good and bad consequences of prior decisions, and they help guide others to do the same. How can you make sure you doing that in the right way? Does God tell you how to make each decision, or has He given a different method? And is it normal for Christians to get messages from God outside the Bible?
This is especially important when considering how popular books like Jesus Calling and its sequel are.