The author, due to the circumstances of his serious study of the Bible, and opportunities to teach it for now over 50 years, has long regarded it as his favorite book of the Bible, and the one that he's studied the most.At this stage of life, it now rings similar to Matthew, Peter's epistles, Revelation, and James, all written about the same time, all dealing with persecution of Christians by unbelieving Jews, all dealing with an imminent judgment coming on Old Covenant Israel, and all dealing with the passing away of an old heavens and earth, AND the inauguration of the new heavens and earth. These are topics which he's researched extensively in his latest books.