It’s become an annual tradition for me and many others to write a post like this. Check out my past lists: 2015 and 2016 lists at my old Patheos blog, and my 2017, 2018, 2019, and 2020 lists posted here at Biblical Reasoning.
In no particular order, here are my five (six! I cheated this year) favorite books that I read in 2021.

Which Trinity? Whose Monotheism? by Thomas H. McCall
This is a classic example of a book I should’ve read years ago—it came out in 2010!—but just never had the chance to, aside from dabbling in a few chapters here and there. In my view, McCall represents the best of the “analytic theology” (AT) movement: the notably logically-rigorous flavor of AT, but rooted deeply in Scripture and the Christian tradition. His critique of eternal subordination of the Son, years before the 2016 debate, is particularly helpful and still relevant.

The Incarnate Lord by Thomas Joseph White
Another book I came a little late to, but am glad I did. Few people have White’s rare ability to engage some of the most theologically and philosophically complex issues with clarity and precision. In this book in particular, he tackles all of the major issues and questions that arise in Christology in general and Aquinas’s Christology in particular.

Faith, Hope, Love by Josef Pieper
After becoming somewhat bored of overwrought, pragmatic books on morality and ethics, I asked a few philosophy/ethics scholar-friends for recommendations. This book by Pieper was the near-unanimous recommendation. I was blown away by his simple, even doxological, approach to theological ethics, which has obviously been fostered over Pieper’s decades of personal reflection and practice.

On the Trinity by Hilary of Poitiers
I’m always reading the church fathers as part of my research, teaching, and personal interest, and it was my goal this year to read the entirety of Hilary’s work on the Trinity. “The Athanasius of the West” did not disappoint; his orthodox Trinitarian formulations are worked out in unique ways, and his framing around Exod. 3:14 is worth the price of admission.

Letters for the Church by Darian R. Lockett
Lockett is one of my favorite New Testament scholars (and all-around human beings). His broader scholarship contributes to two broadly under-appreciated fields: canon and the Catholic/General Epistles. Those two expertises combine into an excellent, accessible volume on the major theological and canonical issues in interpreting these epistles.

The Same God Who Works All Things by Adonis Vidu
Vidu’s work is truly a monumental addition to the field of Trinitarian theology. Simply put, inseparable operations are a crucial piece of the Trinitarian puzzle, and Vidu’s is the first full-scale work done on the doctrine in recent memory. This book has a great combination of exegetical insights, theological imagination, and historical sensitivity.