'Hills' in the Bible

After He had dismissed the crowds, He went up on the mountain by Himself to pray. When it was evening, He was there alone.

Jesus went on from there and passed along by [the eastern shore of] the Sea of Galilee. Then He went up on the hillside and was sitting there.

"What do you think? If a man has 100 sheep and one of them strays, he leaves the 99 in the hills and goes to look for the one that has strayed, doesn't he?

"then let those who are in Judaea escape to the hills;