So great to see that you are interested in the book of Revelation. It is a very good idea to choose books like this one by Guthrie to help you develop a better understanding of the message the last book of our bibles has for us. Guthrie is a very well respected and careful author who has written a number of books to help us understand our bibles better. This is a very useful and practical video you made and I was glad to see it.