2 Kings 5:11-13

11But Naaman went away angry, saying, “I thought that he would surely come out, stand and call on the name of the LORD his God, and wave his hand over the spot to cure my leprosy. 12Are not the Abanah and Pharpar, the rivers of Damascus, better than all the waters of Israel? Could I not have washed in them and been cleansed?” So he turned and went away in a rage.

13Naaman’s servants, however, approached him and said, “My father, if the prophet had told you to do some great thing, would you not have done it? How much more, then, when he tells you, ‘Wash and be cleansed’?”