During forty years of caring for districts of churches and isolated believers, besides raising up new churches by evangelistic effort, the author of this work became greatly impressed with the need of educating the people in the fundamental doctrines of the Holy Scriptures. He has found very few who could give from the word of God an intelligent reason for even its most prominent and important truths. This spiritual poverty any minister will discover by personal investigation. When we add to this condition the fact that during the past thirty years new errors have been stealthily introduced among Christians generally--errors which undermine the very foundations of Bible truth and Christianity--it becomes evident that even professing Christians are unprepared for the crises they will be obliged to meet in the near future.