2 Kings 2:20

And he said, Bring me a new cruse, and put salt therein. And they brought it to him.

Bring me a new cruse, and put salt therein. The noxious qualities of the water could not be corrected by the infusion of salt; because, supposing the salt was possessed of such a property, a whole spring could not be purified by a dishful for a day, much less in all future time. The pouring in of the salt was a symbolic act with which Elisha accompanied the word of the Lord, by which the spring was healed.