Dr. Andreas J. Köstenberger is a renowned New Testament scholar, author, and speaker with a passion for equipping the church through sound biblical teaching. He is the founder of Biblical Foundations, an organization dedicated to restoring the biblical foundations of the home, the church, and society. Andreas has authored or edited more than 30 books, including God, Marriage, and Family, The Theology of John’s Gospel, and Invitation to Biblical Interpretation. He has served as a professor at several respected seminaries and continues to speak globally on theology, biblical interpretation, and Christian living.
Dr. Margaret Köstenberger is a respected scholar, educator, and advocate for biblical womanhood and family life. With a doctorate in theology and years of experience as a teacher and ministry leader, Margaret brings deep insight and practical wisdom to her writing and speaking. She co-authored God’s Design for Man and Woman with Andreas and is passionate about encouraging women in their calling and roles within the home, church, and society.
Together, Andreas and Margaret have been married for over 30 years and are parents to four children. They speak and write as a team on issues related to marriage, parenting, and biblical manhood and womanhood. Their shared ministry reflects a commitment to helping families live out God’s design with clarity and conviction in today’s culture.