Apostasy is defined as a falling away from, or a deliberate abandonment of, what had been established scriptural principles and doctrine. This is exactly where the broader Church is today on the doctrine of divorce and remarriage. Written from an Evangelical Protestant perspective we examine this apostasy and its ramifications to the broader Church, society and individuals. The authors' own 40 year journey vividly underscore the theme. Christians from the first 1900 years of the Church would not recognize today's doctrine as Christian. Jesus' exact teachings are examined in depth as are those of Paul. Jesus' definition of the divorced and remarried as adulterers is paramount to the entire discussion. Adultery is one listed reason for exclusion from the kingdom. The differences between legalism and grace are examined and explained. The outcomes to individuals, and society, are listed and backed with scripture, history, and facts; demonstrated beyond a reasonable doubt.