It was a remarkable turn of events. Peter, who had denied knowing Christ in a moment of fear, is transformed by the power of the Holy Spirit at Pentecost. Suddenly the fisherman who had stumbled along behind Jesus for three years is the head of the Apostles, preaching to everyone who will listen with a boldness that will characterize the rest of his life and ministry. How can such a transformation happen—for him and for us? Presented by Dr. Tim Gray.