People

Rev. Dr. Mark Pearson, Assistant Pastor

Mark hails from Greeneville, Tennessee. He was a member of the Pride of the Southland band at the Univeristy of Tennesee and holds a bachelor’s degree in music education, a master’s in marriage and family therapy, and a Master of Divinity degree. He also earned a Doctor of Divinity degree from Reformed Theological Seminary in…

Rev. Paul Lawing, Assistant Pastor

Paul is a North Carolina native and a graduate of Erskine College and Reformed Theological Seminary. He and his wife, Ramsey, recently welcomed their first baby. Paul joined our staff in May 2025.

Rev. Bobby Roberts, Church Planter – Christ Church Jonesborough

Bobby was born and raised in Asheville, NC and graduated from North Carolina State University in 2015. In 2020, he graduated from Reformed Theological Seminary in Charlotte with a Masters of Divinity. Bobby and and his wife, Annie, have two little girls. He is excited to be the pastor of our church plant, Christ Church…

Trey Caines, Youth Director

Trey joined our staff in December 2024. He’s a native of Ashland, Kentucky and graduate of Eastern Kentucky University with a degree in criminal justice; he is working toward his Master of Divinity degree. Trey also serves as an officer in the Army National Guard.  Trey and his wife, Lydia, recently welcomed their first child.

Joni Guinn, Children’s Ministry Coordinator

After several years of volunteering with our children’s ministry, Joni joined our staff in 2025. A graduate of Milligan College, Joni spent about fifteen years as a registered nurse before moving into children’s ministry. Joni and her husband, Luke, have two elementary-aged children.

Callie Armstrong, Director of Women’s Ministry

Callie grew up in Memphis, Tennessee, and moved to East Tennessee in 2007. She holds a BSBA in Marketing and a Masters of Business Administration from Union University in Jackson, Tennessee. Callie and her husband, David, came to Westminster in 2022 and have a son and a daughter. Callie joined our staff in early 2026.

Doug Hornsby, Facilities Manager

Doug was born and raised in Auburn-Opelika, Alabama. He is a veteran who served a decade in the United States Air Force and a former football/baseball coach, landscape operator, and fitness instructor. Doug served in healthcare for over 30 years and, with his wife, is the co-founder of Johnson County Pregnancy Center. He is an active member…

Julie Bicknell, Financial Secretary

Julie is a lifelong resident of Johnson City, TN. She attended East Tennessee State University majoring in Accounting and worked for twenty years in financials before joining the staff at Westminster in 2010.
She married her childhood sweetheart Bob in April 1990. Bob volunteered in Children’s Ministry until 2015 and is currently employed as a computer programmer at Ballad Health. Together they have been blessed to raise a nephew, take care of family, and shelter numerous rescue animals.

Rebecca Horvath, Administrative Assistant

Rebecca grew up in Marion, Virginia, then spent several years in Charlotte, NC, before moving to Johnson City in 2003. She is a graduate of Wingate University with a bachelor’s degree in psychology and is a writer, editor, and an active volunteer in her children’s schools. She and her husband, Eric, are the parents of…

David Hale, Music Director

Born in Miami, Florida, David has served churches as music director in Florida, Texas, Kentucky and Tennessee . He holds a BM in Music Education from Carson-Newman College, MCM from Southwestern Theological Seminary and MM from Eastern Kentucky University. In addition to serving churches he has served as Chairman of the Music Department at Clear Creek Baptist College and served on the music faculties of Eastern Kentucky University, Tusculum College and East Tennessee State University.
David and his wife Becky enjoy traveling and have visited all seven continents. They live in Elizabethton and have one son Doug who lives with his family in Scottsboro, Alabama.

Sherrill Gibson, Church Organist

Sherrill Gibson has extensive experience as a Music Director and organist, serving churches in Tennessee, West Virginia, Indiana, Kentucky, and Florida. Additionally, he has served as music teacher at Providence Academy here in Johnson City. Sherill holds a Bachelor in Science from ETSU and a Master of Church Music from Southern Baptist Theological Seminary, with…

Dr. David Brickle, Pianist and Artist in Residence

David joined the staff of Westminster Presbyterian Church as pianist during the summer of 2020. He is also an Assistant Professor of Music at Milligan University teaching piano and music theory. Previously, he served as pianist for Cornerstone Presbyterian Church in Tallahassee, FL for six years. His academic credentials include Doctor of Music and Master of Music degrees in piano performance as well as completion of the Graduate Specialized Studies Program in Pedagogy of Music Theory at Florida State University. He completed his undergraduate studies in his home state of South Carolina earning a Bachelor of Music degree in piano performance at the University of South Carolina.