Jesus formally chooses the twelve disciples that will accompany him for the rest of his stay on earth. His fame has now spread through Galilee and Judea, and huge crowds appear whenever he stops to speak. Jesus teaches the apostles how to pray by reciting for them the words of the lord's prayer and delivers the sermon on the mount, one of his most important and memorable sermons. Word of his miraculous powers spreads even wider when he cures a leper of his painful affliction.