This has to be one of the best theology and doctrine training guides available. I use it for Christian Education (Sunday School) and new members' training. I required each preacher, deacon, and teacher to participate in the class, which I taught. We did a deep dive into this curriculum--not a survey or a quick overview. I was amazed at some of the questions asked, which let me know that much teaching was required. Thus, what was supposed to take approx. 22-weeks, took 2-years. But the church was delighted and the benefits were immeasurable. I now use it for small-group Bible study. Now that there is a Logos edition, I am truly pumped.