2 Kings 6:18-22

18As the Arameans came down against him, Elisha prayed to the LORD, “Please strike these people with blindness.” So He struck them with blindness, according to the word of Elisha.

19And Elisha told them, “This is not the way, and this is not the city. Follow me, and I will take you to the man you are seeking.” And he led them to Samaria.

20When they had entered Samaria, Elisha said, “O LORD, open the eyes of these men that they may see.”

Then the LORD opened their eyes, and they looked around and discovered that they were in Samaria.

21And when the king of Israel saw them, he asked Elisha, “My father, shall I kill them? Shall I kill them?”

22“Do not kill them,” he replied. “Would you kill those you have captured with your own sword or bow? Set food and water before them, that they may eat and drink and then return to their master.”