We have used several of Ray's series for couples studies and they are excellent learning tools helping to put the Biblical writings in the historical cultural context. Those truely interested in grasping what God is saying in its full context would find Ray's materials invaluable.
This is the fifth book in the That the World May Know series by Vander laan and is a very good study on the spread of the Gospel across the world following the previous four studies on the locations in Israel. I highly recommend not only this book but the entire series.
My six children love Ray Vander Laan's "Faith Lesson" DVD's. I bought all the DVD's and all the study guide books so that I could learn in depth. This book is fantastic. It brings deeper thoughts, greater knowledge and it is a pleasure to spend time working on each chapter. I do this study guide on my own, after watching the Faith Lesson... and I love it. Many times after I finish my study book chptr, I will watch the DVD session over and catch more details. LOVE IT!!!