Acts 26:25-27

Paul asserted that what Festus called madness was true and reasonable. What had not been done in a corner (Acts 26:26) was the fulfillment of prophecy by the life, death, and resurrection of Jesus, and the preaching of the gospel. Jesus’ ministry was well known in Palestine. "Done in a corner" was another Greek idiom of the day. [Note: Ibid.] If Agrippa believed the prophets, Paul believed he could not help concluding that Jesus fulfilled what they predicted. Paul was backing the king into a corner with what had not been done in a corner. All of this was beyond Festus, but Agrippa knew the issues, and Paul was aiming his presentation of the gospel at him primarily. The accused had now become the accuser.