Jeff Vines is senior pastor of Christ’s Church of the Valley in San Dimas, California. Prior to that he spent twenty years on the mission field (in Zimbabwe and New Zealand), planting churches and training leaders. For seven years he was the featured speaker on the weekly television broadcast Questions for Life, and frequently debated agnostics and atheists on national radio. He is the author of Dinner with Skeptics and has published several articles in Christian Standard. Jeff and his wife have two children.
Nancy Karpenske has been involved in women's ministry and adult Bible studies for over three decades at LifeBridge Christian Church in Longmont, Colorado.