Peter O’Neill has been serving as Senior Pastor at Cornerstone since March 2014. A graduate of Talbot Seminary (Master of Divinity, 2011), he moved from California to join our thriving, Bible-centered church family. Peter is passionate about preaching, teaching, and sharing the Gospel, and he leads our staff with a heart for making disciples of Jesus Christ.
Before entering full-time ministry, Peter spent 12 years as a chemist—earning a degree in Chemistry with a minor in Biology. His background fuels his love for apologetics and for exploring how God’s truth in Scripture and the wonders of science work together to reveal His creation.
When he’s not studying or serving, you might find Peter hiking to waterfalls, scuba diving or spending time with his wife, Cami, and their two children, Logan and Chase, in their hometown of Lilburn.
Rob joined the pastoral team at Cornerstone in June 2018, bringing with him a heart for ministry and a wealth of diverse experience. A graduate of Cedarville University (B.A. in Biblical Education, 2000), Rob has served in both professional and ministry settings, including nine years as an administrative missionary with Ambassadors for Christ International (AFCI), an organization dedicated to advancing the Gospel worldwide.
With a passion for helping people grow into all that God has called them to be, Rob delights in encouraging and equipping believers to serve and thrive in the Body of Christ.
Rob lives in Lilburn with his wife, Tammy, and their two children, Robby and Charisa. Whether at home, in the community, or at church, Rob’s heart is to see lives transformed by the grace and truth of Jesus.
Wilmer joined the Cornerstone staff in October 2023, bringing energy, creativity, and a deep love for investing in the next generation. A graduate of Belhaven University (B.A. in Biblical Studies, 2021), Wilmer has been serving in youth ministry since he was just 17 years old. Before coming to CBC, he led as an interim youth director in Snellville, GA, and as a part-time youth director in Dunwoody, GA.
Passionate about equipping students to become lifelong disciples who make disciples, Wilmer works to build an authentic, Christ-centered community where young people can grow in their faith and friendships. And if you want to talk superheroes, movies, video games, or books—he’s your guy!
Wilmer lives in Norcross with his wife, Leah. Together they enjoy working out, watching movies, and exploring local parks.
Debra joined the Cornerstone staff in 2016 and brings a joyful passion for helping children know and love God. Her heart is to teach God’s Word in a way that reaches from the head to the heart to the feet—shaping young lives to think, believe, and live for Christ. A graduate of the University of Georgia with a Bachelor of Science in Home Economics Education, Debra has taught both Home Economics and English in public schools and homeschooled her own children for 15 years.
At CBC, she oversees cbcKidz and Vacation Bible School, pouring creativity and care into every detail. Whether preparing Sunday School lessons or dreaming up ways to make cbcKidz even better, Debra’s heart for children and families shines through.
Debra lives in Stone Mountain with her husband, Leavitt. They are blessed with five grown children and many grandchildren who keep life full and joyful.
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Kim joined the CBC staff in 2025, but her connection to Cornerstone Bible Church began years earlier when she first attended as a teenager. She brings over 35 years of experience in the corporate world, along with valuable ministry experience as an executive assistant to a senior pastor in the Atlanta area during a church relaunch. Kim is deeply grateful for the opportunity to now serve the local church she has loved for so long.
At CBC, Kim supports various ministries and assists the pastors with a wide range of administrative and organizational needs—she’s truly our “utility player” who helps make things run smoothly behind the scenes.
Originally from out of state, Kim moved to the Atlanta area as a teenager and now makes her home in Stone Mountain with her husband, adult daughter, two dogs, and a chinchilla. Her favorite pastime is spending time with her extended family, especially her beloved grandnephew.
Angie joined the Cornerstone staff in 2018, bringing valuable bookkeeping experience to her role overseeing the church’s financial and accounting needs. Her careful attention to detail helps keep CBC’s ministries running smoothly behind the scenes.
With over 24 years of active service in the local church, Angie has shared her gifts in many ways—singing in the choir and worship team, teaching Sunday School, and investing in small group ministry. She continues to serve faithfully as a member of our Worship Team and is deeply involved in the life of our church family.
A Lilburn native, Angie now lives in Loganville with her husband, Doug. She is the proud mother of two adult daughters, Abbie and Maggie, and a joyful grandmother to her granddaughter, Emmie.