vol 1 is a terrific spiritual adventure, launched by a father who cannot go himself and a son whose spirit catches fire with the drama of possibilities that Christ's prayer may be at last and, perhaps, on time, fulfilled. Learned lots about other Faiths as well. And I thought I already knew alot about them!
I learned so much about the relationships among the Zoroastrian Faith, Judaism and Christianity in volume I and quite a bit more; what a great way to explore the fulfillment of prophecies from all 3 religions and then including Islam, from various perspectives; that was very helpful.