A new cruse; partly that there might be no ground of suspicion that the cure was wrought by any natural virtue of any thing which was or had been in the cruse before, but only by God's power; and partly that there might be no legal pollution in it which might offend God, and hinder his miraculous operation by it. Put salt therein; a most improper remedy; for salt naturally makes waters brackish, and lands barren. Hereby therefore he would show that this was effected solely by the Divine power, which could work either without means, or against them.
Related Commentaries of 2 Kings 2:20
2 Kings 2:20
20 And he said, Bring me a new cruse, and put salt therein. And they brought it to him.