Our Staff

*Emails are received by Keystone Staff members and kept in the strictest of confidence.

Terry Nelson – Senior Pastor
Terry has served in local church ministry for over thirty years as student pastor, executive pastor, and senior pastor. Also working within business environments, Terry has taught Team Building, Conflict Resolution, and Communication Skills for several corporations in the Southeast. Terry maintains a passion for community. His involvement includes leadership training with the Harrison High School football and lacrosse teams. Currently he is assisting as community coach for ninth grade football at Allatoona High School. He is a graduate of Mercer University and Southwestern Baptist Theological Seminary.

Tiffany McQueen – Minister of Assimilation and Church Administration
Tiffany has served in local church ministry since 2004 as a Minister of Children and Preschool, Ministry Assistant, and a Minister of Foundations. She loves the Lord and is passionate about her walk with Him. She has a dedication to help children come to know the Lord and develop a personal relationship with Him. As a graduate from the Georgia Institute of Technology (Ga Tech), Tiffany is also passionate about doing the Lord’s work with excellence and leaving a Biblical foundation as a legacy. Tiffany is married and God has blessed her family with two beautiful children. She has “no greater joy than to hear that her children walk in truth.” – 3 John 1:4.

Rosalind Siska – Worship
From the age of 13, Rosalind has been involved in worship ministry and is passionate about worship and the power it holds in the body of Christ. She is also passionate about educating and inspiring young kids to step up and use their gifts early in life to worship God. God began molding Rosalind’s heart at a young age through the work and her experience with foster care. This instilled a passion in Rosalind for children born into any and all circumstances of life; which strongly shaped her ministry today as well as her involvement in the local church. For several years she has lead worship, orchestrated summer camps, children's productions, and led kids choirs.

Bobby Siska – Worship
Throughout his involvement in ministry, Bobby has grown passionate for worship, music, and the ability that God has through it. Bobby is also passionate with youth, children's ministry, and the value that they have for the kingdom of God and His will in their lives and future. Bobby has served in the local church since middle school, playing in the worship band, being involved in small groups, and reaching out to the community. At the beginning of college, Bobby majored in music business and traveled with numerous worship teams while attending Southeastern University and Oral Roberts University. Bobby has also recently traveled to foreign countries teaching music to kids, and leading worship at the churches there. He is currently enrolled at Kennesaw State University as a Marketing Major, and is excited to be part of the next chapter that God has in store for Keystone.

Hudson Hancock – Students
Hudson is passionate about relating Biblical truths to students in a way that is engaging and impactful. He loves serving the church and seeing God's people love the surrounding community. Hudson has been ministering to students since he was a senior in high school – he now aims to see the Lord grow our student ministry. Hudson desires to see this generation of students live life to the fullest by allowing Jesus to direct their steps and be their ultimate authority. Hudson graduated from Lee University with a degree in Digital Media. 

Lisa Stone – Preschool
Lisa is passionate about teaching children about the love of Jesus Christ. She enjoys seeing a baby smile and the first steps of a toddler. When a child starts to sing Jesus Loves Me, it will melt her heart. Lisa is zealous about sharing her love for Christ from rocking a babe to sleep to reading the bible and teaching children about Jesus Christ.  Lisa has been instrumental in teaching preschool choir for over 15 years in local church ministry. She has also worked at North Cobb Christian school with 4 year olds and kindergartners as a music director, chapel leader and paraprofessional. In the community she enjoys volunteering with the Horizon League at the Special Needs Park.  She professionally works with WinShape Camps who provide a camp environment that challenges campers to sharpen their character, deepen their Christian faith, and grow in their relationships.

Jim McQueen - Facilities Supervisor