What did Jesus mean in Matthew 16:18 when he said, “And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it.”? Was Jesus building his church on Peter and a long line of Popes as many claim? (What authority does the Pope claim to have? Who does he claim to be? ) What can we learn by looking at the Greek words translated to “rock”? What is the difference between a ‘petra’ and a ‘petros’? What else can we learn from the prepositions used? Who does the Bible say is the rock? Finally, what did Jesus mean by binding and loosing?