John Wesley on Luke 10:33

But a certain Samaritan came where he was - It was admirably well judged to represent the distress on the side of the Jew, and the mercy on that of the Samaritan. For the case being thus proposed, self interest would make the very scribe sensible, how amiable such a conduct was, and would lay him open to our Lord's inference. Had it been put the other way, prejudice might more easily have interposed, before the heart could have been affected.