This set contains one of Dr. Bob's books, Studies in the Atonement, and four CD audio sets; Apostasy, a 13 CD set; Buddhism Unmasked, a single CD; Judaism Explained, a single CD; and 1800 Spawning Ground for the Cults, a single CD.  The book tells us what Jesus did for us on the cross, and why we should be thankful.  Christians and Christian Leaders really need to have this book for reference.