My ways are not your ways, nor are My thoughts your thoughts
Dr. Roberto Miranda(Audio: Español)
God takes Naaman's life and takes it through a process. God not only wants to heal this noble and influential man but he also wants to do other things in his life, he wants to deal with him and that is why we see that he submits him to this treatment.
The prophet Elisha discerns this pride, this secular arrogance that Naaman brings and this expectation of being treated in a preferential way, and special because he is the great general representative of an entire powerful nation, and wants to teach Naaman that God is the Lord of all the Earth, and that anyone who approaches Him must approach with humility, and with simplicity of heart.