2 Kings 5:10

5:10 Elisha sent out a messenger who told him, “Go and wash seven times in the Jordan; your skin will be restored and you will be healed.”

2 Kings 8:2-3

8:2 So the woman did as the prophet said. She and her family went and lived in the land of the Philistines for seven years. 8:3 After seven years the woman returned from the land of the Philistines and went to ask the king to give her back her house and field.