None of [the] major figures who constituted the inner circle of Jesus would have become or remained followers of Jesus after the crucifixion if there was no resurrection and no resurrection appearances of Jesus. The church, in the persons of its earliest major leaders, was constituted by the event of the resurrection, coupled with the Pentecost event! The stories of these figures, especially their post-Easter stories, are the validation of this fact. There would be no church without the risen and appearing Jesus. ― Ben Witherington III (from, What Have They Done with Jesus? Beyond Strange Theories & Bad History)