II Kings 6:18-20

So when the Syrians came down to him, Elisha prayed to the LORD, and said, “Strike this people, I pray, with blindness.” And He struck them with blindness according to the word of Elisha. Now Elisha said to them, “This is not the way, nor is this the city. Follow me, and I will bring you to the man whom you seek.” But he led them to Samaria. So it was, when they had come to Samaria, that Elisha said, “LORD, open the eyes of these men, that they may see.” And the LORD opened their eyes, and they saw; and there they were, inside Samaria!