Dr. Charles D. "Chuck" Pierce has been used by God to intercede and mobilize prayer throughout the world. He is an ordained minister and serves as president of Glory of Zion International Ministries in Denton, Texas. He also serves as president of Global Spheres, Inc., a ministry for apostolic, prophetic, and intercessory leaders. He had a degree in business from Texas A&M and a doctorate of ministry from the Wagner Leadership Institute. He is the author of numerous books, including Cuando Dios habla, C mo redimir el tiempo, and C mo interpretar los tiempos.