Jack is an equipper and trainer for the body of Christ. He has planted three churches; served as a seminary professor; traveled the world speaking in conferences; authored best selling books; and is currently the senior pastor of Wellspring Church.

Jack was raised in Fort Worth, Texas in a broken home that did not know the Lord. When he was 17 years old, a friend led Jack to Christ. Jack began reading the Bible for the first time and fell in love with the Scriptures. He attended Texas Christian University in Fort Worth, TX, where he majored in Philosophy and started working with the ministry of Young Life leading high school students to the Lord.

After graduation in 1971, he attended Dallas Theological Seminary concentrating in Greek and Hebrew study of the Bible. He and Leesa were married in 1974. In 1976, he was invited to join the faculty of Dallas Seminary, teaching Hebrew and books of the Bible in Hebrew. He received both a Master and Doctor of Theology degrees from Dallas Seminary. During his tenure at Dallas Seminary, he started and pastored two churches.

In 1986 after months of concentrated scriptural study, Jack reversed his position on the supernatural gifts of the Holy Spirit. He became convinced that all of the gifts of the Spirit were meant to be used today, including healing and prophecy. God had never withdrawn these gifts, rather many in the church had withdrawn from the gifts. Even though he had no supernatural experience of his own, Jack and Leesa along with others began praying for the sick and listening for the voice of God. Almost immediately, they saw some wonderful healings.

He left the seminary faculty at the end of 1987 and joined the staff of the Vineyard Christian Fellowship Church in Anaheim, CA. He served with John Wimber at the church and traveled around the world with him doing conferences on intimacy with God and the Holy Spirit.

Jack left the Anaheim Vineyard in 1992 to begin his own conference and writing ministry. He has written best selling books, which have been translated into a number of languages. He travels nationally and internationally doing conferences on many themes. He serves on the board of a number of Christian ministries.

Jack is currently the senior pastor of Wellspring Church in North Richland Hills, Texas, a church he started in the spring of 2004. The mission of the church is threefold: to help people cultivate an intimate friendship with Jesus; to help people discover and effectively use their spiritual gifts in significant ways in the church; and having learned how to use these gifts effectively in the church, then to use their gifts in the market place where they spend the majority of their time.

Jack and Leesa live in Colleyville, TX. They have two grown children, Stephen and Alese.