'Hills' in the Bible

And the servants of the king of Syria said unto him, Their god is a god of the hills; therefore they were stronger than we: but let us fight against them in the plain, and surely we shall be stronger than they.

And a man of God came near and spake unto the king of Israel, and said, Thus saith Jehovah, Because the Syrians have said, Jehovah is a god of the hills, but he is not a god of the valleys; therefore will I deliver all this great multitude into thy hand, and ye shall know that I am Jehovah.