Church Staff

Mike Poff – Senior Pastor

A native of Roanoke, Virginia, Mike graduated from Virginia Tech in 1980 with a Civil Engineering degree.  After working eight years as an engineer in Charlotte, North Carolina,  Mike felt led to help others get connected to God and to grow spiritually.  As a result, he moved to Fort Worth, Texas for theological and leadership training. Over a twelve year period, he led various ministries for Hope Church in Fort Worth as an associate pastor. After being out of Virginia for nearly 25 years, Mike returned in September 2005 in the role of Cornerstone’s Senior Pastor to serve the Warrenton community.  Mike and his wife Anna enjoy running, traveling and learning how to cook.


Nat Kurzer - Minister of Students & Worship

Nat, born and raised in Michigan, joined Cornerstone and moved to Warrenton from Sikeston, Mo in June of 2018 where he served as the Worship Pastor of Anchor Church for 4 years. Nat is a 2013 graduate of Central Christian College of the Bible in Moberly, MO with a Bachelor of Science in Youth & Family Ministry, as well as a Ministry Certificate in Worship Leading. He is wife Tabitha is also a graduate of Central, and has received two Masters from Liberty University, and works as a Crisis Therapist. Nat and Tabitha have two sons, Jeremy and James. Nat has a heart to see the local Churches working together as one body and continually growing for the Glory of God. Nat loves to spend time with friends, playing card and board games, and is always excited to learn something new.

Sara Amos - Program Director, Caregiver Ministry

Originally from Fairfax, VA, Sara moved to Warrenton after six years of learning and serving in Blacksburg. Sara has worked as a program director for a grant program of Adult Day Services at Virginia Tech and has served as an intern to senior adults at Blacksburg Baptist Church. Having earned her master's degree in Recreation Therapy and status as a Certified Therapeutic Recreation Specialist in 2019, Sara is now serving as Program Director for the Cornerstone Caregiver Ministry. Sara has always been passionate about serving the senior adult population and also enjoys writing, spending quality time with family and friends, and eating a good breakfast.

Andrea Jaffrey – Ministries Assistant

Andrea Jaffrey is Cornerstone’s Ministries Assistant and has been employed at Cornerstone since April 2000.  Andrea was born and raised in Fairfax, VA and has a Bachelor’s of Fine Arts degree in Visual Communications from Truman State University in Kirksville, Missouri.  She and her husband have been married since 1997 and live in the Town of Warrenton.



Doug Boston

Doug accepted Christ as his Lord and Savior as a college freshman. He has always had a missional focus, working in the community and being a part of over a dozen mission trips. Doug and his wife, Cindy shared a first date of feeding the homeless on the streets of Washington DC. His family is also one of the families that helped birth Cornerstone. Doug has been part of church leadership for the first 16 years of Cornerstone’s existence and has participated in virtually every aspect of ministry at Cornerstone. Doug’s desire is that everyone at Cornerstone sees their value within the body of Christ, grasp a strong sense of God’s direction here, and feel compelled to live a Christ-centered life.

Steve Rakoff

Steve grew up in a non-Christian home and heard the Gospel for the first time as a freshman in college. After committing his life to Christ, he was discipled by the Baptist college ministry for four years. Steve moved to Texas to go to seminary to follow a calling to work with the spiritual lives of college students. He worked with students for 23 years as a college counselor and administrator. While in Texas, Steve served in his church for 28 years in the following areas: trailer team, accounting team, leading men’s groups for 10 years, co-leading 5th and 6th grade ministry, working with the youth program, and helping develop an incorporation ministry.
Steve moved to Virginia and joined Cornerstone in 2014. Since then, he co-led the student ministry, has been a part of the Northstar program for the last year and a half, and recently serves as a greeter and usher. He continues to work with college students at NOVA as faculty sponsor of the Christian group on campus. Steve’s primary spiritual gifts are encouragement, wisdom, discernment, and hospitality. His passion is to develop people; his greatest area of growth is trusting God enough to not “play it safe” when challenging opportunities come. His favorite verse is I Corinthians 15:58 “ Therefore my dear brothers, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord because you know that your labor in the Lord is not in vain.”

Ministry Leaders

Anna Poff – Women’s Ministry

Born and raised in Texas, Anna is the middle of three sisters and found her way to Warrenton by way of marriage to Mike in January 2009. Upon arriving in Warrenton, Anna finished her B.A. in Humanities in May 2009 and graduated from the College at Southwestern in Fort Worth, Texas. Anna serves as Cornerstone’s Women’s Ministry leader along with leading a small group. She loves meeting new people and especially desires to see women walk in the freedom that Christ gives. Anna has run several marathons, 10k’s and 5k’s and is a huge fan of Mexican food.