God had used Peter and John to heal a crippled beggar, and the leaders of Israel were unhappy with the miracle. So they arrested the disciples and brought them before the Sanhedrin. “By what power or what name did you do this?” they demanded. “Name” stands for authority. So they were actually asking, “By what authority did you accomplish this miracle?” The disciples answered, “It is by the name of Jesus Christ of Nazareth, whom you crucified.” This sentence is the theme of the chapter, and it carries us into this new section. There is a fourfold sequence.