2 Kings 2:20-22

He said, “Bring me a brand-new bowl and put some salt in it.” They brought it to him. He then went to the spring, sprinkled the salt into it, and proclaimed, “GOD’s word: I’ve healed this water. It will no longer kill you or poison your land.” And sure enough, the water was healed—and remains so to this day, just as Elisha said.