"Grace in the hands of Jesus is difficult to accept. It is no respecter of conventional social boundaries. His stories are his meals and his healings betray a decided preference for the socially marginal, for the religiously unrespectable. Indeed, Luke records Jesus' own admission that, in the eyes of his critics, he is nothing other than a 'friend of tax collectors and sinners.' In a word, in the message and public ministry of Jesus grace is offensive, even scandalous."
John T. Carroll and James R. Carroll, Preaching the Hard Sayings of Jesus (Peabody: Hendrickson, 1996),6.