2 Kings 5:13

5:13 His servants approached and said to him, “O master, if the prophet had told you to do some difficult task, you would have been willing to do it. It seems you should be happy that he simply said, “Wash and you will be healed.”

2 Kings 18:17

18:17 The king of Assyria sent his commanding general, the chief eunuch, and the chief adviser from Lachish to King Hezekiah in Jerusalem, along with a large army. They went up and arrived at Jerusalem. They went and stood at the conduit of the upper pool which is located on the road to the field where they wash and dry cloth.