Now the leaders of the town of Jericho visited Elisha. "We have a problem, my lord," they told him. "This town is located in beautiful natural surroundings, as you can see. But the water is bad, and the land is unproductive."
Elisha said, "Bring me a new bowl with salt in it." So they brought it to him.
Then he went out to the spring that supplied the town with water and threw the salt into it. And he said, "This is what the LORD says: I have made this water wholesome. It will no longer cause death or infertility. "
References for 2 Kings 2:21
And sure enough! The water has remained wholesome ever since, just as Elisha said.
Elisha left Jericho and went up to Bethel. As he was walking along the road, a group of boys from the town began mocking and making fun of him. "Go away, you baldhead!" they chanted. "Go away, you baldhead!"
Elisha turned around and looked at them, and he cursed them in the name of the LORD. Then two bears came out of the woods and mauled forty-two of them.
From there Elisha went to Mount Carmel and finally returned to Samaria.