A general, and a river
“His servants came near, and spoke to him, and said, “My father, if the prophet had asked you do some great thing, wouldn’t you have done it? How much rather then, when he says to you, ‘Wash, and be clean?’””2 Kings 5:13 · WEB
Naaman commands the army of Israel's enemy and has leprosy. The one who knows where help is, is a captured Israelite girl serving his wife — the least powerful person in the house. He arrives at Elisha's door with horses, chariots and a fortune in silver, and Elisha does not come out; he sends a servant with a message: wash seven times in the Jordan. Naaman is insulted. He expected a ceremony, a wave of the hand, something befitting his rank, and the Jordan is a muddy little river. His own servants talk him round with a piece of plain sense: if the prophet had told you to do something great, would you not have done it? He washes, and his skin comes back like a child's. Healing was free, and that was the part he nearly could not accept.