A modern theological classic, John Murray’s Principles of Conduct clearly show the organic unity and continuity of biblical ethics. Murray addresses ethical questions related to topics such as marriage, work, capital punishment, veracity, Jesus' teachings in the Sermon on the Mount, law and grace, and the fear of God.

Although the Ten Commandments provide the core of biblical ethics, Murray points the reader time and again to all of Scripture as the basic authority in matters of Christian conduct.

"An heir to the combined wisdom of Puritanism and Princeton, Murray did his work as a guardian of the Reformed tradition... His special contribution was to support and polish this heritage through the discipline of biblical theology, practiced according to the redemptive-historical approach that the great Geerhardus Vos, one of Murray's teachers, pioneered a century ago..." J.I. Packer, Professor of New Testament Research at Trinity Evangelical Divinity School in Deerfield, Illinois.