While ethical issues are being raised with new urgency, Christians are increasingly unfamiliar with the moral grammar of their faith. The need to reengage the deep-down things of the Christian moral tradition has seldom been more urgent. Moral theology has a long history in Catholic and Anglican traditions. The tradition of theological ethics, influenced by Aristotle by way of Aquinas, offers a distinct emphasis on virtues and character formation. Now Daniel Westberg infuses this venerable ethical tradition with biblical confidence in the centrality of the gospel and the role of the Holy Spirit in forming character, while also laying down sound moral psychology for practical reason and ethical living. Christians ― whether of Anglican, Catholic, or other traditions ― interested in vigorously retrieving a great moral heritage, will find here common ground for ethical reflection and discipleship.