Elisha sent a messenger to say to him, "Go, wash yourself seven times in the Jordan, and your flesh will be restored and you will be cleansed." (2 Kings 5:10)
This was the prophetic promise given to Naaman, the commander of the army of the king of Aram when he had come seeking for a cure for his leprosy from the man of God Elisha.
Elisha did not come out to meet Naaman but had only sent a servant to give him the message. Naaman went away angry and said, "I thought that he would surely come out to me and stand and call on the name of the LORD his God, wave his hand over the spot and cure me of my leprosy. Are not Abana and Pharpar, the rivers of Damascus, better than any of the waters of Israel? Couldn't I wash in them and be cleansed?" So he turned and went off in a rage. (2 Kings 5:11, 12)
Naaman's servants went to him and said, "My father, if the prophet had told you to do some great thing, would you not have done it? How much more, then, when he tells you, 'Wash and be cleansed'!" So he went down and dipped himself in the Jordan seven times, as the man of God had told him, and his flesh was restored and became clean like that of a young boy. (2 Kings 5:13, 14)
Obedience brought him healing and deliverance and he returned to his country a happy man.
To a disobedient king of Israel (Saul), God had this to say through Samuel the prophet:
"Does the LORD delight in burnt offerings and sacrifices as much as in obeying the voice of the LORD? To obey is better than sacrifice, and to heed is better than the fat of rams. (1 Samuel 15:22)
The Apostle Peter exhorts us regarding obedience in his epistle:
As obedient children, do not conform to the evil desires you had when you lived in ignorance. (1 Peter 1:14)
God expects us to be obedient to his Word at all times. God delights in our obedience and his blessings rest upon us when we live in obedience to him. Praise the Lord.