Our Team

Doug Turner

Doug Turner is passionate about helping the church realize its vital and unique call to be ready to move where God wants to go. Doug has decades of experience as both a pastor and consultant with RSI Stewardship. Doug served as a pastor in local churches in Texas and Georgia, most recently as the founding pastor of Peachtree Corners Baptist Church where he led two successful capital campaigns. He served as president at RSI for six of his 17 years there. Doug’s campaign work has garnered over $1 billion committed to the organizations served. He and his wife Jill live in Eatonton, Georgia. They have four children and two granddaughters.

“Doug Turner was my first personal coach in fund-raising and stewardship, and he changed my life and ministry. Doug served as our main consultant for two very successful capital campaigns at Redeemer. I highly recommend him and his services to any church or organization that wants to grow in these same areas.” 

Tim Keller

Pastor, Redeemer Presbyterian Church, New York City

Mick Tune

Mick brings a unique experience and insight into his work with churches.  He has worked with churches of all traditions and has the unique flexibility to thrive in each setting.  Mick has also led campaigns for over $30 million as well as church plants. He brings energy and innovation to each campaign setting that reflects his commitment to excellence.

Mick graduated from Montgomery Bell Academy in Nashville, Tennessee, as a National Merit Scholar, and from Vanderbilt University (BA) in three years with a degree in English Literature and Creative Writing. Subsequently, he completed his ministerial training at Brite Divinity School (Texas Christian University) where he was Valedictorian and selected as their outstanding student in each of his last two years.

“I attribute a great deal of our success (alongside acknowledging the wonders of God’s grace) to Mick Tune, who until recently was working with a major, national, church fundraising organization.

This is my second time to work with Mick. The first was when I was at St. Matthias’ and we undertook a major campaign to build new parish offices and an education building. Mick’s coaching was such an important part of that campaign’s incredible success that I didn’t even shop around when St. John’s embarked on a campaign. I just emailed him directly.”

Fr. David Houk

St. John's Episcopal, Dallas TX

Bill McMillan

Bill served in local  church ministry for over 20 years as a Teaching Pastor and Director of Counseling Ministries.  For the past 18 years he has worked with the local church in the areas of Stewardship and Generosity Development.  Bill has a passion to help resource the local church through effective stewardship programs that enable the church to reach more people with the message of Christ.  His strong desire to see individual Christ Followers grow in the grace of giving has helped him serve churches in Stewardship Journeys and see many lives transformed through this process.  A gifted leader, strategist and inspiring communicator Bill is able to connect with church leaders and staff to create a Stewardship process that fits their culture and leads to growth in ministry and strengthens their culture of generosity.  Bill has assisted over 150 churches in raising over 500 million dollars.

Bill has also worked with other faith-based non-profits in the area of donor development, staff alignment, and communication strategies.  Bill co-authored the book The Ministry of Giving with Joel Mikell and Kimberly Stewart.  The Ministry of Giving has helped many churches effectively disciple their Financial Leaders outside of a campaign process.

A resident of McKinney, Texas, Bill is the husband of Denise and the father of Erin, Kari, Chase, and Blair.  Bill and Denise also have six incredible grandchildren.  He is an active member and volunteer at The Parks Church in McKinney.

Joel Mikell

Joel Mikell served more than 25 years as a Pastor of Worship and Music in the local church. Since 2000, he has served the local church through the ministry of stewardship and generosity. As a Senior Vice President and Partner at Horizons, his passion for this ministry comes from seeing churches experience profound spiritual growth and individual lives transformed through stewardship journeys built around prayer and scripture.  A gifted leader, teacher and motivational speaker in the field of relational, holistic stewardship, Joel feels a deep calling to serve the local church by helping them steward and resource their vision to reach people for Christ. Since 2000, Joel has assisted more than 170 churches in raising over $600 million.

Joel is the author of Crafting a Theology of Stewardship (and why your church needs one) and is co-author of Church Giving Matters and The Ministry of Giving which is the only book of its kind that focuses on ministering to financial leaders in the church outside of a campaign.

Joel received a bachelor’s degree in Music from Troy University and a master’s degree from Southwestern Seminary. He did post graduate work at the University of Georgia. A resident of Shelby, North Carolina, Joel is the husband of Donna and father of Cindi, Jeremy, and Jenni. In his spare time, he enjoys writing music, running, hunting, bass and fly-fishing, and participating in outdoor activities of all kinds. He especially enjoys spending time with his six grandchildren, Alexis, Addison, Carter, Savannah, Colton and Lillianne. Joel and Donna are actively involved in their church in Shelby leading a small group Bible Study and participating in the Music Ministry.

Joe Park

In 2002, after a career that saw him rise to be the CEO of a rapidly growing bank holding company, Joe followed God’s leading into full time ministry by joining Horizons where God has used his keen financial and leadership skills with his heart for the Gospel to help Horizons guide congregations to invest billions of dollars into ministry.  Joe is committed to the belief that biblical generosity is a result of prayer, a grateful heart and effective discipleship practices and he leads the Horizons team that develops and implements campaign and ministry strategies following these guiding principles.

In addition to capital campaigns, Joe actively assists churches in the implementation of best practices in developing generous congregations, Vision discernment, discipleship, managing change and systems development.

Joe earned a bachelor’s degree in Banking and Finance from the University of Arkansas and a master’s degree in Business Administration from Boston University.  Joe and his wife, Reverend Lisa Greenwood, share seven children.