1 Kings 20:23

20:23 Now the advisers of the king of Syria said to him: “Their God is a god of the mountains. That’s why they overpowered us. But if we fight them in the plains, we will certainly overpower them.

1 Kings 20:28

20:28 The prophet visited the king of Israel and said, “This is what the Lord says: ‘Because the Syrians said, “The Lord is a god of the mountains and not a god of the valleys,” I will hand over to you this entire huge army. Then you will know that I am the Lord.’”