2 Kings 6:17-20

17And Elisha prayed, and said, Jehovah, I pray thee, open his eyes, that he may see. And Jehovah opened the eyes of the young man; and he saw: and, behold, the mountain was full of horses and chariots of fire round about Elisha. 18And when they came down to him, Elisha prayed unto Jehovah, and said, Smite this people, I pray thee, with blindness. And he smote them with blindness according to the word of Elisha. 19And Elisha said unto them, This is not the way, neither is this the city: follow me, and I will bring you to the man whom ye seek. And he led them to Samaria.

20And it came to pass, when they were come into Samaria, that Elisha said, Jehovah, open the eyes of these men, that they may see. And Jehovah opened their eyes, and they saw; and, behold, they were in the midst of Samaria.