In the final hour of the Jesus Christ Show, the first caller, Keith, asks about Mary's sinlessness, and Jesus explains the Catholic Church's doctrine of the Immaculate Conception, which is not supported by scripture. He also discusses the concept of unforgivable sins, citing the blasphemy of the Holy Spirit, and how it's a final decision that can't be undone. Other callers ask about the Trinity, the physical conception of Jesus, and the history of Christmas.