2 Kings 2:20
And he said, Bring me a new cruse, and put salt therein. And they brought it to him.
Cross-reference
2 Kings 20:7
Parallel
In 2 Kings 20:7, Isaiah uses a lump of figs to heal Hezekiah's boil — both prophets apply a physical substance for miraculous healing.
Judges 9:45
Contrast
Judges 9:45 uses salt to curse land with barrenness — contrast with Elisha using salt to heal water and make land productive.
Ezekiel 47:11
Contrast
Ezekiel 47:11 says some marshes will remain salty — contrast with Elisha's complete healing of the spring here.