This book is now available:

Wayne Grudem. Christian Ethics: An Introduction to Biblical Moral Reasoning. Wheaton, IL: Crossway, 2018.

[Update in 2024. It’s now available as a second edition: Wayne Grudem. Christian Ethics: Living a Life That Is Pleasing to God. 2nd ed. Wheaton, IL: Crossway, 2024.]

My endorsement:

This is the best all-around book on Christian ethics I’m aware of, and I plan to require it as the primary textbook for my course on biblical ethics. Grudem writes in his characteristic style: clear, logical, accessible, and (usually!) persuasive.

Last summer I spent a few weeks carefully working through Grudem’s manuscript and shared detailed feedback. The book’s clarity and scope is similar to Grudem’s large books on systematic theology and evangelical feminism. It is an ideal entry-point to help people think about and discuss ethical issues, and I’m looking forward to using it as the main required textbook for my ethics course this fall at Bethlehem College & Seminary.

Here are some related videos Crossway produced: