2 Kings 2:19-22
19Then the men of the city said to Elisha, “Behold now, the habitat of this city is pleasant, as my lord sees; but the water is bad and the land 1is unfruitful.” 20And he said, “Bring me a new jar, and put salt 1in it.” So they brought it to him. 21And he went out to the spring of water and athrew salt 1in it and said, “Thus says Yahweh, ‘I have 2purified these waters; there shall not be from there death or barrenness any longer.’” 22So the waters have been 1purified to this day, according to the word of Elisha which he spoke.