Joel Muddamalle holds a PhD in theology and serves as the Director of Theology and Research at Proverbs 31 Ministries. He is a co-host of the Therapy & Theology podcast alongside Lysa TerKeurst and licensed counselor Jim Cress. Joel is also part of the preaching team at Transformation Church in Indian Land, South Carolina, and is a frequent speaker at conferences and events nationwide.
In 2024, Joel released his debut book, The Hidden Peace: Finding True Security, Strength, and Confidence Through Humility. Based in Charlotte, North Carolina, Joel and his wife lead a full and lively household with their four children and two dogs. When he’s not reading a theology book, you’ll likely find him coaching one of his kids’ sports teams or staying sharp on the basketball court.
Irene Rollins is a certified Emotional Intelligence Coach passionate about helping others break self-defeating habits and experience personal growth through teaching, writing and coaching. An overcomer of addiction and trauma, she vulnerably shares her journey in her book Reframe Your Shame.
Married to Jimmy Rollins for over 25 years, the couple co-founded Two Equals One, a marriage ministry and podcast committed to strengthening relationships through authenticity, faith, and practical wisdom. Their first co-authored book is set to release on November 5, 2025.
Becca Ketterling had a dream to bring the women of River Valley, and the
surrounding area, together to experience a conference that would both inspire
them and draw them closer to Jesus. For the past 15 years Sparkle Conference
has been the fulfillment of that dream. In addition to founding Sparkle
Conference, Pastor Becca leads River Valley Church alongside her husband,
Rob Ketterling. They enjoy spending time with their family, sons Connor and
Logan, daughters-in-law Alexia and Mikayla, and their grandkids Beckham and Anastasia, children of Connor and Alexia.