The Parable of the Good Samaritan is the story Jesus told in Luke 10:25-37, in which a Samaritan man travelling a road stopped and helped a Jewish man who had been beaten, robbed, and left for dead. The Samaritan people were viewed with contempt by Jewish people, and yet the Good Samaritan stopped to help the injured man. Jesus told the story to illustrate that a true neighbor helps her fellow human.
In this passage in the New Testament book of Luke, a man had asked Jesus what the greatest command was. Jesus responded that the greatest commandment was to love God, and that the second greatest commandment was to love your neighbor. The man asked who his neighbor was, and Jesus responded by telling the story of the Good Samaritan. In the story, two Jewish men - both prominent religious leaders - had separately passed by the Jewish victim of the crime, but neither had stopped to help. When the Samaritan man came along, he stopped to help the injured man, put the man on his own donkey, took him to an inn, and paid the innkeeper to let the man stay and to take care of him.
According to BibleGateay.com, the Samaritans were despised by Jews, yet this Samaritan helped the man. Jesus' question back to the man who had posed the original question was, "Which of these three do you think was a neighbor to the man who fell into the hands of robbers?” The questioner replied that it was the Samaritan man who had shown mercy on him.