In view of some of the comments on this thread, I would like to offer a general observation about theories of Christian origins. When we speculate about the causes of things, we should always try to keep our speculations simple. The more elaborate the speculation, the less likely it is to be true. Anyone who has an elaborate theory about the writing of the Gospels which involves detailed speculation about the creation of individual scenes in the Gospels, bears a very heavy burden of proof.