A less lengthy approach - "Tell It Slant: A Conversation on the Language of Jesus in His Stories and Prayers" by Eugene Peterson
Unlike other books by Eugene Peterson, each chapter of this book ("Tell It Slant: A Conversation on the Language of Jesus in His Stories and Prayers") is more-or-less self-contained. You can take a long break before returning to this book for the next chapter. Having said that, I still prefer lengthy books written by Eugene (e.g. "Christ Plays in Ten Thousand Places")