The Biblical Flood in the days of Noah has become a great divide between two watersheds of belief. On the one hand there are those who say it is either a purely mythological event or else possibly a local or regional flood. This group includes practically all evolutionists, but it also includes the "old-earth creationists."

Many students of the creation movement have noted that the publication of The Genesis Flood by John Whitcomb and Henry Morris (1961), was used by God to catalyze the modern revival of creation thinking. Up until that time, most scientists and many theologians held to some form of theistic evolution. Most had been intimidated into accepting long ages and evolution.