The best book to read to give you an excellent, detailed explanation using primarily the Bible, but also much fill in information from the testimony of Josephus is in the 1877 work by Rev. Wm. Patton called "The Judgement And Destruction Of Jerusalem." Getting a proper view of what exactly happened in 70AD and how it all fits into God's plan is going to bring you so much closer to our Lord and give you fresh eyes of faith into His plan and His amazing power!