Integrative Theology is one of the better theological resources because it doesn't just focus on one aspect. Most Theology books look at a system, a few focus on the biblical data on a specific issue. For each issue, Demarest and Lewis run through half a dozen formulations for the issue at hand, followed by a summary of the Biblical texts, and conclude with a systematic formulation and sections on apologetics and application. While the volumes do not cover as broad a range of topics as some comparable works, the depth in which the important issues are covered is difficult to understate.