'Hills' in the Bible

Their dwelling place was from Mesha all the way to Sephar in the eastern hills.

Now the Valley of Siddim was full of tar pits. When the kings of Sodom and Gomorrah fled, they fell into them, but some survivors fled to the hills.

The blessings of your father are greater than the blessings of the eternal mountains or the desirable things of the age-old hills. They will be on the head of Joseph and on the brow of the prince of his brothers.