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].

     23, 24. there came forth little children out of the city—that is, the idolatrous, or infidel young men of the place, who affecting to disbelieve the report of his master's translation, sarcastically urged him to follow in the glorious career.