“Then Elisha prayed and said, “O LORD, please open his eyes that he may see.” So the LORD opened the eyes of the young man, and he saw, and behold, the mountain was full of horses and chariots of fire all around Elisha.”
The young man woke up seeing only the enemy army surrounding the city — fear is what we see when our eyes haven't yet been opened.
Elisha already saw the spiritual reality; his prayer wasn't for himself but so the terrified servant could see what he already knew.
God didn't change the situation, he changed the sight — the fiery army was already there before the prayer, just invisible to natural eyes.
The whole mountain was full — not a small reserve, but an overwhelming force surrounding a single prophet.
Elisha had already told the servant: do not fear, for those who are with us are more than those who are with them — this vision proves the promise.
Act: wherever you only see threat today, pray Elisha's exact words — "Lord, open my eyes that I may see" — before you decide out of fear.