I read Metzger's book while preparing to lead a study group on the Book of Revelation. I found the author, who is well-known and well-respected among biblical scholars using the historical-critical method, to be much more pastoral than usual. He not only uses great research, as one would expect, but uses it in a style of understanding the meaning of the text and offering insights into how we can apply the theology of John today. The book is clearly not intended for scholarly use, but is perfect for the main study text of a bible study. Well done and inexpensive.