M'lakhim Bet (2 Ki) 6:14-17

So he sent horses, chariots and a large army there; they came by night and surrounded the city. The servant of the man of God got up early in the morning; on going outside, he saw an army with horses and chariots surrounding the city. His servant said to him, “Oh, my master, this is terrible! What are we going to do?” He answered, “Don’t be afraid — those who are with us outnumber those who are with them!” Elisha prayed, “ADONAI, I ask you to open his eyes, so that he can see.” Then ADONAI opened the young man’s eyes, and he saw: there before him, all around Elisha, the mountain was covered with horses and fiery chariots.