" The introduction is formal, solemn, complex and controversial. It stands as a fifth witness to the original Easter events, alongside the accounts in the four gospels, and is thus of extraordinary importance for our present study. Bultmann, famously, criticized Paul for citing witnesses to Jesus’ resurrection, as though he considered it an actual event, instead of being merely a graphic, ‘mythological’ way of referring to the conviction of the early Christians that Jesus’ death had been a good thing, not a bad thing. "

― N.T. Wright , The Resurrection of the Son of God (Christian Origins and the Question of God, #3)