"Go and wash in the Jordan seven times, and your flesh shall be restored..."

Naaman the Syrian washing in the waters of the Jordan, from the Monastery of the Life-giving Spring, Dunlap, CA (source)

  
So Na'aman came with his horses and chariots, and halted at the door of Eli'sha's house. And Eli'sha 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." But Na'aman was angry, and went away, saying, "Behold, I thought that he would surely come out to me, and stand, and call on the name of the LORD his God, and wave his hand over the place, and cure the leper. Are not Aba'na and Pharpar, the rivers of Damascus, better than all the waters of Israel? Could I not wash in them, and be clean?" So he turned and went away in a rage. But his servants came near and said to him, "My father, if the prophet had commanded you to do some great thing, would you not have done it? How much rather, then, when he says to you, 'Wash, and be clean'?" So he went down and dipped himself seven times in the Jordan, according to the word of the man of God; and his flesh was restored like the flesh of a little child, and he was clean.
-II Kings 5:9-14, read at Great Vespers for Theophany

(source)
  

Naaman the Leper washing in the waters of the Jordan (source)

  

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!