2 Kings 6:11-12

Now the heart of the king of Aram (Syria) was enraged over this thing. He called his servants and said to them, “Will you not tell me which of us is helping the king of Israel?” One of his servants said, “None [of us is helping him], my lord, O king; but Elisha, the prophet who is in Israel, tells the king of Israel the words that you speak in your bedroom.”