Daily Doctrine is not a groundbreaking work of systematic theology and is not intended to be. Rather, it is an introductory work that focuses on easing people into the subject. It introduces the discipline as a whole, describes the most important terms, and explains the key ideas. In that way, it provides a framework for Christian doctrine and then builds upon it over the course of a year.

I once participated in a panel discussion alongside a seminary professor. He had far more education than I did and far greater expertise in the subject matter. A few moments before we took to the platform together, the moderator went over some of the questions he would be asking us. I found it strangely comforting to see that professor pull out his iPad, dig up some old notes, and begin to skim through them. “I need to remind myself what I believe about that,” he told me.

The fact is, we are forgetful people and often need not just to learn what we believe but to re-learn it. There are exams we might pass at one stage in life but fail in another, not because our doctrine has changed or because we have apostatized, but because we have become forgetful. It’s not that we are ever likely to forget the fundamental doctrines of the faith like the inspiration of Scripture or the divinity of Jesus, but we can certainly grow hazy on some of the lesser matters and waver on some of the secondary issues.

A while back I realized I needed to brush up on some of these and began to organize a system of spaced repetition—a way to encounter these doctrines on a regular basis, thus reinforcing them and keeping them fresh in my mind. And it was right then that I learned about Kevin DeYoung’s Daily Doctrine: A One-Year Guide to Systematic Theology. In fact, an Advance Reading Copy showed up in the mail and I knew immediately it was what I was looking for.

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