Dr. Keller survived colon/pancreatic cancer using only natural methods. Keller was shown a new path and purpose for his life in serving God by teaching others time-tested and learned principles and techniques for healthful living. The book encourages us to return to biblical truth and reveals how modern lifestyles, industrial and agricultural practices influence our health. Readers will see the sound reasoning behind and the details for doing a complete body cleansing program, for making healthier choices in life, and for leading by example to help improve the lives of others.

As Jews, born, raised and educated in America, who now live and worship Jesus in a modern-day Mennonite community, Dr. Keller and his wife and co-author, Kathryn Rose Mandel-Keller, are an example for readers to evaluate their own lives and be willing to change - to improve their own health, the health of society and of this planet.