“The Syrians have said, The Lord is God of the hills, but he is not God of the valleys.” (v.28)
The king of Syria, Ben-hadad, together with his great army, had suffered a humiliating defeat at the hands of Israel and king Ahab. Since Palestine is rather mountainous, king Ben-hadad mistakenly concluded that they Israelites had been successful because their god was a god of the hills. If he could but engage them again in the valley, he was sure that he could easily overcome them.
A prophet of the Lord then spoke to King Ahab saying, “Thus says the Lord, ‘Because the Syrians have said, “The Lord is a god of the mountains, but He is not a god of the valleys, ”I will therefore give all this great multitude into your hand, and you shall know that I am the Lord.’ ” (v.28) When the battle came, God's people won an even more impressive victory.
Thus, both Israel and the Syrians were shown that God is not limited by time or space, He is the LORD of all the earth - even in the valley of deepest testing!
The Truth: “Look to Me, and be saved, All you ends of the earth! For I am God, and there is no other.” (Isaiah 45:22)
