The king of Aram had high admiration for Naaman, the commander of his army, because through him the LORD had given Aram great victories. But though Naaman was a mighty warrior, he suffered from leprosy.
References for 2 Kings 5:1
Now groups of Aramean raiders had invaded the land of Israel, and among their captives was a young girl who had been given to Naaman's wife as a maid.
One day the girl said to her mistress, "I wish my master would go to see the prophet in Samaria. He would heal him of his leprosy."
So Naaman told the king what the young girl from Israel had said.
"Go and visit the prophet," the king told him. "I will send a letter of introduction for you to carry to the king of Israel." So Naaman started out, taking as gifts 750 pounds of silver, 150 pounds of gold, and ten sets of clothing.
References for 2 Kings 5:5
The letter to the king of Israel said: "With this letter I present my servant Naaman. I want you to heal him of his leprosy."
When the king of Israel read it, he tore his clothes in dismay and said, "This man sends me a leper to heal! Am I God, that I can kill and give life? He is only trying to find an excuse to invade us again."
But when Elisha, the man of God, heard about the king's reaction, he sent this message to him: "Why are you so upset? Send Naaman to me, and he will learn that there is a true prophet here in Israel."
So Naaman went with his horses and chariots and waited at the door of Elisha's house.
But Elisha sent a messenger out to him with this message: "Go and wash yourself seven times in the Jordan River. Then your skin will be restored, and you will be healed of leprosy."
But Naaman became angry and stalked away. "I thought he would surely come out to meet me!" he said. "I expected him to wave his hand over the leprosy and call on the name of the LORD his God and heal me!
Aren't the Abana River and Pharpar River of Damascus better than all the rivers of Israel put together? Why shouldn't I wash in them and be healed?" So Naaman turned and went away in a rage.
But his officers tried to reason with him and said, "Sir, if the prophet had told you to do some great thing, wouldn't you have done it? So you should certainly obey him when he says simply to go and wash and be cured!"
So Naaman went down to the Jordan River and dipped himself seven times, as the man of God had instructed him. And his flesh became as healthy as a young child's, and he was healed!
Then Naaman and his entire party went back to find the man of God. They stood before him, and Naaman said, "I know at last that there is no God in all the world except in Israel. Now please accept my gifts."