J. I. Packer (1926–2020) is regarded as one of the most well-known theologians of our time. Once named to Time magazine's list of the 25 Most Influential Evangelicals in America, Packer served as Board of Governors' Professor of Theology at Regent College in Vancouver, British Columbia. His books include Praying, A Quest for Godliness, Evangelism and the Sovereignty of God, and Rediscovering Holiness.

Carolyn Nystrom (MA, Wheaton College) has written more than eighty books, Bible study guides, and children's titles. She coauthored Praying with theologian J. I. Packer and Is the Reformation Over with scholar Mark Noll. She is also the author of the LifeGuide Bible Studies 1& 2 Peter and Jude, Money and Work, Friendship, Listening to God and more.

In addition to actively serving in her church, she has been a foster parent, an elementary schoolteacher, the stated clerk of her EPC presbytery, and a book editor. Carolyn lives in northern Illinois with her husband, and they have four grown children.