I bet they were preparing to give him the benefit of the doubt. They're prepared to excuse the shortcomings of someone safe and familiar who is from where they live and known by all of them. At least, that would be my hope – that was my hope when I first preached.
They think they're waiting for the boy, the carpenter’s son, who knows how to make the best shelves in town. They think they're waiting for the familiar sibling of James, Joses, Judas, Simon, and his sisters (unnamed!). They think they're waiting for the obedient son of Mary.