“All of the class materials, including the numerous colorful charts and PowerPoint presentations, helped greatly to more fully illuminate each subject. The many maps, with colorful overlays, brought a richer understanding and a greater context to each study. I still find these materials a great resource.”

— Richard Hixon

“I've been sitting under Duane's teaching for 15 years. It started out good and over the years got better and better. I've heard a lot of Bible teachers over the years and they all have their areas of expertise and/or pet doctrines, but I have never heard one with as much comprehensive and practical knowledge of the entirety of Scripture as Duane. Duane also creates wonderful handouts with lots of pictures and colorful charts which really make the material come alive.”

— Herb Sutherland

“From the very first class meeting, it was obvious that Duane DenBoer had a passion for studying God's Word and sharing it with others. History, theology, culture, and Scripture were presented in a cohesive way; well-designed visual aids made the subject matter even more accessible.”

— Sherry Johnson

“Duane is very knowledgeable with his materials, everyone that has been taught by him would say that he is very passionate with his teachings. Great teacher!”

— Ehi Yau