The lawyer asks where the line is.
A lawyer stands up to test Jesus. Jesus turns the question back to him, and he answers well: love God with everything you have, and love your neighbour as yourself. Jesus agrees. Do this, he says, and you will live.
Then Luke tells us why the next question comes. The lawyer wants to justify himself, so he asks who his neighbour is. He seems to want a boundary he could be sure he had kept. It is still a real question. Jewish teachers debated how far 'neighbour' reached. Some limited it to fellow Israelites. Others extended it to everyone.
All three men saw him.
A man on the road to Jericho is stripped, beaten, and left half dead. A priest sees him and crosses to the other side. A Levite looks at him and crosses too. Then a Samaritan comes, and he sees him as well.
None of them fails to notice. The difference comes after the seeing. Two men keep their distance. One is moved with compassion and goes to him.
Luke does not say why the priest and the Levite passed by. Readers have suggested fear of robbers, busyness, or purity rules. So we can judge what the two men did, but not what was in them. And we are left with no reasons of theirs to hide behind.
Mercy here costs time and money.
Most of the story's words go to what the Samaritan does. He binds the wounds with oil and wine, puts the man on his own animal, and looks after him at an inn until morning. Then he pays the innkeeper two coins and promises to repay whatever more it costs. It costs him his supplies, his animal, his day, his money, and a promise with no upper limit.
His help also has a shape. He does not stay. He hands the ongoing care to someone else and goes on his way. It is real mercy, and it is also limited, shared, and planned.
The question gets turned around.
The lawyer asked who his neighbour was. Jesus ends by asking which of the three was a neighbour to the wounded man. The first question sorts people into those owed care and those who are not. The second asks who gave it.
The one who gave it was a Samaritan. Relations between Jews and Samaritans often carried real hostility. Making a Samaritan the example, after a priest and a Levite, was likely a jolt to the first hearers.
The lawyer answers correctly again: the one who showed mercy. Twice he knows the answer, and twice Jesus replies with a command. Do this. Go and do the same. Knowing the answer is good, but it is not the finish line.
