He has also served as an adjunct faculty member of the Austin Graduate School of Theology teaching college accredited Bible classes in the Dripping Springs community. John serves on the advisory board of World Video Bible School, and completed 9 years of service as a school board trustee for the Dripping Springs Independent School District. He served for nearly twenty years in the capacity of Director and Assistant Director of both the annual Southwest Hensel Bible Camp, and the AIM Youth Leadership camp at Peach Valley.  He is the narrator for the Searching for Truth DVD and author of the book by the same name. He served from 2005 through 2008 as a co-editor of the monthly periodical The Gospel Journal. John is also the narrator and instructor of Learning to Use the Greek New Testament, a thorough study of New Testament Greek presented in 35 lessons on 13 DVDs. 

     John’s most recent endeavor includes his directorship of the Bible Land Passages Project as well as serving as one of the scriptwriters and narrators of the Bible Land Passages videos. He and his wife Carla are also the directors of Bible Land Passage Tours, Expeditions, and Studies; an educational ministry dedicated to defending the faith and edifying the church. Since 1986, he has preached in Gospel Meetings and lectureships in over eighteen states and has conducted or participated in numerous campaigns to various foreign countries including Jamaica, Tobago, Malaysia, and Singapore. In January of 2017, John and Carla began a new ministry called Bible Passages: a work dedicated to reaching souls, training preachers, and defending the faith. They work closely with the Bear Valley Bible Institute International in Denver, and World Video Bible School in Maxwell, Texas. 

       Carla grew up in a family dedicated to ministry, then met John while they were in college at Texas State University. They married in 1986, and have since been involved in ministry at the Bible Chair on the campus of TSU, then with the Southwest School of Bible Studies in Austin, Texas, and currently with the Dripping Springs church of Christ. They look forward to joining the faculty at the Bear Valley Bible Institute International where Carla will be teaching in the women’s program. Carla taught for over ten years in the Christian Women’s Studies program at the Southwest School of Bible Studies. She enjoys speaking to women of all ages in various places and is a staff writer for Christian Woman magazine. She also has served in numerous Christian youth camps, and especially enjoys helping John guide trips to Israel, and blogging about those experiences here. John and Carla have three sons, Jordan (daughter-in-law, Erin), Jacob (daughter-in-law, Alyssa), and Micah (daughter-in-law Courtney), one grandson, Jackson, and one granddaughter, Emmalyn, who belong to Jordan and Erin.