Luke 4:27

And many lepers were in Israel in the time of Eliseus the prophet; and none of them was cleansed, saving Naaman the Syrian.

Cross-reference

2 Kings 5:1-27 is the full account of Naaman's healing — the event Jesus directly references here.

In 2 Kings 5:14, Naaman is cleansed of leprosy by dipping in the Jordan — the very event Jesus cites to illustrate God's mercy to outsiders.

1 Kings 19:16 Historical context

In 1 Kings 19:16, Elisha is anointed as prophet, setting the stage for his later healing of Naaman referenced here by Jesus.

1 Kings 19:19–21 Historical context

1 Kings 19:19-21 records Elisha's calling as prophet — the same Elisha in whose time Naaman was healed.