The exchange begins with a lawyer — an expert in Mosaic law — standing up to test Jesus. This is not casual conversation. In the Greek, the verb "tempt" (ekpeirazō) suggests a deliberate attempt to expose a flaw in Jesus's teaching. He asked: "What shall I do to inherit eternal life?" Jesus answered with a question: what does the law say? The lawyer answered correctly: love God with everything you have, and love your neighbor as yourself. Jesus affirmed him: do this and you will live.
Then comes the verse that triggers the parable — Luke 10:29: "But he, willing to justify himself, said unto Jesus, And who is my neighbour?" The lawyer knew the answer to the first question. He wasn't asking for knowledge. He was asking for a limit. In Jewish legal tradition, "neighbor" had a debated scope — did it extend to foreigners, to enemies, to Samaritans? Some interpretations restricted it to fellow Israelites. The lawyer was seeking confirmation of a boundary. He wanted to know who was outside the category, so he could love his neighbor with a clean legal conscience and everyone else not at all.
Jesus told a story. A man traveling from Jerusalem to Jericho — the road drops 3,300 feet over seventeen miles through desolate terrain, known in antiquity as "the Way of Blood" because of the bandits who used its rocky outcrops — was stripped and beaten and left for dead. A priest came down the road and passed by on the other side. A Levite came and passed by. Both had reasons rooted in purity law — touching a possibly-dead body would have rendered them unclean and unable to serve in the temple. Their avoidance was not pure hypocrisy; it was a real legal tension.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.