There is more on Elisha and Naaman from 2 Kings 5:15-19, with thoughts led by David Neville.
15 Then Naaman and all his attendants went back to the man of God. He stood before him and said, "Now I know that there is no God in all the world except in Israel. So please accept a gift from your servant." 16 The prophet answered, "As surely as the LORD lives, whom I serve, I will not accept a thing." And even though Naaman urged him, he refused. 17 "If you will not," said Naaman, "please let me, your servant, be given as much earth as a pair of mules can carry, for your servant will never again make burnt offerings and sacrifices to any other god but the LORD. 18 But may the LORD forgive your servant for this one thing: When my master enters the temple of Rimmon to bow down and he is leaning on my arm and I have to bow there also--when I bow down in the temple of Rimmon, may the LORD forgive your servant for this." 19 "Go in peace," Elisha said. After Naaman had travelled some distance,