Naaman was a Syrian general who was also a leper. He came to Elisha for help.
So Naaman came with his horses and chariots and stood at the door of Elisha’s house. 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.”
2 Kings 5:9-10
He followed Elisha’s instructions and became clean. This convinced him that the God of Elisha was the true God.
Then he returned to the man of God, he and all his company, and he came and stood before him. And he said, “Behold, I know that there is no God in all the earth but in Israel; so accept now a present from your servant.”
But he said, “As the LORD lives, before whom I stand, I will receive none.”
And he urged him to take it, but he refused. Then Naaman said, “If not, please let there be given to your servant two mule loads of earth, for from now on your servant will not offer burnt offering or sacrifice to any god but the LORD.”
2 Kings 5:15-17
He came to Elisha for physical cleansing but he received spiritual cleansing as well.