Adele Ahlberg Calhoun (MA, Gordon-Conwell Theological Seminary) has worked in Christian ministry for over forty years, and she and her husband, Doug, currently work with Highrock Church in Arlington, Massachusetts. As certified Enneagram instructors, they enjoy resourcing spiritual leaders and pastors through spiritual direction and teaching the Enneagram. Adele is the author of Spiritual Disciplines Handbook, Invitations from God and the coauthor of True You and Women & Identity.

Previously, Adele and her husband copastored Redeemer Community Church in Needham, Massachusetts, and she was formerly pastor of spiritual formation at Christ Church in Oak Brook, Illinois. A retreat speaker and trained spiritual director, she has taught courses at Wheaton College and Northern Seminary. In the early 1970s she helped pioneer student work with the International Fellowship of Evangelical Students in Southeast Asia and the Middle East. She has also worked with InterVarsity Christian Fellowship in New England and Canada and with the International Fellowship of Evangelical Students in the West Indies and South Africa.