II Kings 6:8-10

Now the king of Syria was making war against Israel; and he consulted with his servants, saying, “My camp will be in such and such a place.” And the man of God sent to the king of Israel, saying, “Beware that you do not pass this place, for the Syrians are coming down there.” Then the king of Israel sent someone to the place of which the man of God had told him. Thus he warned him, and he was watchful there, not just once or twice.