This is on John 20:19-31, the story of "doubting Thomas" -- which I take to be a parable (not literal history); a story of the post-crucifixion Jesus appearing (twice) in a locked room to the disciples, first when Thomas was not there, and the second time when he was present. In between, they had reported the first appearance to Thomas who famously said he would not believe without seeing and touching Jesus' wounds. This is a parable about how to have faith that the message of Jesus -- that the Kingdom of God was present --- could be believed, even in his absence. But it brings up the issue of pain, evil and suffering, which are perpetual challenges to faith. In fact, even to Jesus' faith. Jesus too doubted.