Maybe we should call it exegetical summary of the New Testament (with Malachi and Joel). Just kidding. But it's one of my favorite resource. Very helpful, especially when I am struggling with individual commentaries and harder to understand controversies.

Perfect place to start your church or small group on an approachable, non-intimidating and interesting study on systematic theology. Truly every believer should be a theologian. On that grounds (not technicality or profundity) that I give it a 5.