A lawyer asked Jesus who his neighbour was, hoping for a boundary. Jesus answered with a road that everyone listening knew, the steep descent to Jericho where robbers waited. Two religious men saw the victim and crossed to the other side. A Samaritan, whose people the listeners despised, came near, bound the wounds, put the man on his own animal, paid the innkeeper, and promised to return.
Mercy in this story has a cost in oil, wine, time, money, and risk. It also has a schedule, because the Samaritan comes back. Jesus did not answer the lawyer’s question. He turned it around: not who is my neighbour, but who proved neighbour to the man who fell among robbers. Then He said, go and do likewise.
But a Samaritan, as he journeyed, came to where he was; and when he saw him, he had compassion.
Luke 10:33, RSV-CE