Luke 17:17
And Jesus answering said, Were there not ten cleansed? but where are the nine?
Cross-references
Luke 17:15
Parallel
Luke 17:15 describes the one leper who returned to give thanks — the direct contrast to the nine Jesus asks about.
Romans 1:21
Related theme
Romans 1:21 describes humanity failing to give thanks — exactly the ingratitude Jesus laments here.
2 Chronicles 32:25
Parallel
2 Chronicles 32:25 shows Hezekiah not making return for God’s benefit — mirroring the nine lepers’ ingratitude.