I found this book to be one of the best introductory books I have read on Apocalyptic Literature in the Bible, and highly recommend it for anybody who wants to study, teach, or preach through any of the Apocalyptic books or sections of the Bible.
The Bible is uniquely human because the Bible accurately reveals to us what is in the heart of man. God knows what is in the heart of men (Jer 17:10; 1 Cor 2:11), and He reveals it to us through Scripture. It is my conviction that Scripture does not so much reveal God to us as it reveals us to us. Scripture is a mirror which God puts up to our own hearts to reveal what is in man (Jas 1:23).
When some ask about the 400 years of silence between the Old and New Testaments, they are really asking about the years of silence in their own life. Once you learn that years of silence in Scripture does not mean God is absent, you can see that God is also at work in your life even when He seems absent or silent.