Dr Chuck D. Pierce serves as president of Global Spheres. Inc., and president of Glory of Zion International Ministries. He is author of God's Unfolding Battle Plan and co-author with Rebecca Wagner Sytsema of The Future War of the Church, Protecting Your Home from Spiritual Darkness, Prayers That Outwit the Enemy, God's Now Time for your Life and A Time to Advance (with Robert and Linda Heidler). Chuck and his wife, Pam, have six children. Dr Robert D. Heidler is an aposolic teacher with Glory of Zion International Ministries and dean of The Kingdom Force Institute at the Global Spheres Center in Corinth, Texas.

He is a frequent conference speaker and ministers with his wife, Linda, in Thailand, Mongolia, New Zealand, the United Kingdom and other places around the world. Robert's books include Experiencing the Spirit, Restoring Your Shield of Faith (with Chuck Pierce), Set Yourself Free: A Deliverance Manual. The Messianic Church Arising, and Iona Portal. Robert and Linda have three grown children and live in Denton, Texas.