Franz Delitzsch wrote, A System of Biblical Psychology in 1855 and called it "one of the oldest sciences of the church." Oswald Chambers published lectures in 1912 as the last definitive spokesman for Biblical psychology before secular psychology displaced it. This book traces seven stages of mankind from original creation to eternal glorification, and is for anyone interested in what God reveals in Scripture about human nature. Insights from 55 years of teaching Scripture and 35 years of clinical practice are synthesized. The content is scholarly enough for a textbook, but written simply enough for any serious reader. Theological principles are presented from the perspective of a mental healthcare provider, not case studies or personality theory. Heinroth, Delitzsch, Nee, and Chambers are introduced to terminal generation readers. Christ's return is closer than ever, and the need to understand human behavior has never been more urgent! Dr. Don Ott is an ordained evangelist and licensed psychologist. He has practiced in Russellville, Arkansas since 1987 and established Christian Psychological Resources in 1994. His doctorate is from Rosemead School of Psychology in La Mirada, California, and he is a charter member of the American Association of Christian Counselors. Since ordination in 1968, he served on seven church staffs in Arkansas, Oklahoma, and California, and was adjunct professor at Mid-South Christian College in Memphis, Tennessee for 32 years. As a mental-health missionary, he has made over 40 trips to 14 countries on six continents, and has directed Cuba Bible Institute in Havana since 2009. He specializes in Biblical psychology, Christian counseling, and marriage and family life. Don and Johniece married in 1970. They have two daughters, three sons, and six grandchildren. He enjoys fishing, swimming, photography, and running.