1 Kings 20:28

20:28 A man of God came near and spoke to the king of Israel, and said, Thus says Yahweh, Because the Syrians have said, Yahweh is a god of the hills, but he is not a god of the valleys; therefore will I deliver all this great multitude into your hand, and you shall know that I am Yahweh.
-World English Bible

Other Translation

20:28 And there came a man of God, and spake unto the king of Israel, and said, Thus saith the LORD, Because the Syrians have said, The LORD [is] God of the hills, but he [is] not God of the valleys, therefore will I deliver all this great multitude into thine hand, and ye shall know that I [am] the LORD.
-King James Version