Jesus being criticized yet again by the Pharisees for hanging out with lepers, tax collectors, prostitutes–and worse than just hanging out with them, he is eating with them. He has “received” them returning their hospitality and receiving them as any host would receive a guest. The sinners are fascinated–no one has ever treated them like this before, so whatever this man has to say, whatever he is going to do, they want to be there with him. They come closer as he invites them in and the Pharisees and scribes blow a gasket.