'Valleys' in the Bible

Ahab had instructed Obadiah, "Go throughout the land to all of the water springs and to all of the valleys. Maybe we'll find some grass to keep the horses and mules alive. Also, maybe we won't have to kill some of our cattle."

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.