20. Bring me a new cruse, and put salt therein—The noxious qualities of the water could not be corrected by the infusion of salt—for, 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 [Keil].