Jesus sends the ten lepers to the priests before they are healed, an instruction read here as love for the law, not indifference to it. The resurrection language of verse 19 makes clear that the leper, like us, is saved by faith alone.
The unnamed village of Luke 17:12 becomes a picture of every sinner: because of the fall, we are the lepers standing at a distance. Christ’s unity with his church in the victory of the cross is what finally saves those who were lost.
Gehazi’s resentment of Elisha, and of the Gentile Naaman, drives a close reading of a single chapter’s ending. The irony of verse 27 gets lingered over, setting Gehazi’s duplicity directly against Elisha’s own Godlikeness.