Cumulative Case
There is a rational approach that has been called a variety of names, the cumulative case approach or the inference to the best explanation approach being the most common. Such an argument is rational but does not take the form of a proof or argument for probability in any strict sense of these words. This approach understands Christian theism, other theistic religions, and atheism as systems of belief. Such systems are rationally supported by a variety of considerations or data. The model for defending Christianity is not to be found in the domain of philosophy or logic, but law, history, and literature. This does not mean that the apologist may ignore the deliverances of philosophy or logic, but that the nature of the case for Christianity is to be found in a different field. The cumulative case approach to apologetics has been adopted by a number of distinguished apologists, such as F. R. Tennant, Elton Trueblood, G. K. Chesterton, and C. S. Lewis. It also has been adopted by such philosophers as Basil Mitchell, Richard Swinburne, and William Abraham.
Paul D. Feinberg
By Scripture
Old Testament