David Duncan
Pulpit Minister,

Pictured with his wife, Barbara

Anna Beth and Emma

David Duncan
Pulpit Minister
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David Duncan and his family moved to Houston in 2006, where he accepted the role of Pulpit Minister at Memorial. He previously lived in Oklahoma while serving as the Outreach Minister at the Edmond Church of Christ from 1999-2006, and as an adjunct instructor at Oklahoma Christian University.

David and his wife, Barbara, met while students at Oklahoma Christian. During their engagement, Barbara was located in Mito, Japan where she taught English as a vocational missionary. At the conclusion of her assignment, she was joined by David and the two were married in Japan!

After David completed a Master’s degree at Oklahoma Christian, he and Barbara moved to Vitoria, Brazil as part of a four-family mission team to plant a church there. Their family grew when two daughters, Anna Beth and Emma, were born while they were serving on that mission field.

David completed a doctorate in Ministry at Houston Graduate School of Theology in 2010.

He loves to watch pro baseball and college football, and feels very blessed to have a wife and two daughters who love to cook!

Colin Vine
Involvement & Congregational Care Minister

Administrator Memorial Bible Institute

Office Manager
Pictured with his wife, Jennie

Colin Vine
Involvement & Congregational Care Minister
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Colin Vine is the Involvement and Congregational Care Minister and has been at Memorial since October 2002. Colin is the Administrator of the Memorial Bible Institute and the church Office Manager. He and his wife, Jennie, came to the United States from the United Kingdom, where Colin served 22 years in the Royal Air Force. He is a graduate of Heritage Christian University. If he stays on track with his studies, he will achieve his terminal degree at about age 104. The Vines have two daughters, 2 grandsons, and one granddaughter.

His favorite scripture changes frequently but can always be found somewhere between Genesis 1:1 and Revelation 22:21. 

Robert Heyen

Outreach Minister

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Robert Heyen joined the Memorial team as the Outreach Minister in the summer of 2009.  He and his family moved from Enid, Oklahoma where Robert served at the Garriott Road Church of Christ as a Family and Youth Minister for five and half years.  Prior to full-time ministry, Robert owned and operated a farming operation in southwest Kansas.   After years of serving as a deacon and being involved in various ministry activities in the Dodge City congregation, he felt called by the Lord to serve in ministry full-time.  After selling his equipment and turning over operations to a couple of friends, he hasn’t looked back.

Robert is married to Molly.  They first met at an area wide church youth event in Kansas while in High School.  Seven years later the Lord brought them together again and a few months later they were married!  Robert and Molly have been blessed with four children, Elizabeth (Libby), Natalie, Jared and Konrad.

Robert has an Agriculture Economics degree from Kansas State University.   With his farming background he is used to having a hands-on approach to all he does.  His greatest enjoyment comes from spending time with his family and helping others in whatever way he can.  He loves to study God’s word and to sing his praises.  He also has been known to be seen playing in a pickup game of basketball or two.  Dating his wife is what he loves most of all.

His favorite verse is Jeremiah 29:11.

Robert Heyen
Outreach Minister
Pictured with his wife Molly

Elizabeth, Natalie,

Jared and Konrad.