As a pastor I believe the church is losing sight of its original calling of making disciples and we seem to be more interested or focused on how we fill seats. But true believers are hungry for doctrinal truth because it offers confidence which becomes a power to witness more readily. We need to articulate our faith, the accuracy of the bible and most importantly the gospel. This is a step in the right direction. I suggest Systematic Theology which is a more detailed version of this book. You can get it cheaper in book form for comparison but either way its wonderful.