2 Kings 5:10, 12-13

And Elisha sent a messenger to him, saying, “Go and wash in the Jordan seven times, and your flesh shall be restored, and you shall be clean.”

Are not Abana and Pharpar, the rivers of Damascus, better than all the waters of Israel? Could I not wash in them and be clean?” So he turned and went away in a rage. But his servants came near and said to him, “My father, it is a great word the prophet has spoken to you; will you not do it? Has he actually said to you, ‘Wash, and be clean’?”