I think he'd tell the Christians they've got the wrong end of the stick and they shouldn't have listened to the men who came after him, but they wouldn't believe it was really him so they'd continue to do as they've always done. As he wasn't the son of god, and he knew he was an ordinary man, I don't think he'd expect to push his way to the front of the queue at Tescos - and rather than popping down to B&Q for hammer and nails people would probably just think he was nuts!!