"By the time we get to the third story, and we hear about the plight of the lost son, we are fully prepared to expect that someone will set out to search for him. No one does. It is startling, and Jesus meant it to be so. By placing the three parables so closely together, he is inviting thoughtful listeners to ask: "Well, who should have gone out and searched for the lost son?" Jesus knew the Bible thoroughly, and he knew that at its very beginning it tells another story of an elder and younger brother--Cain and Abel. In that story, God tells the resentful and proud older brother: "You are your brother's keeper."