'Hills' in the Bible

Truly in vain is salvation looked for from the hills, and the multitude of mountains; truly in Jehovah our God is the salvation of Israel.

I beheld the mountains, and lo, they trembled, and all the hills shook violently.

Thine adulteries, and thy neighings, the lewdness of thy fornication, on the hills, in the fields, thine abominations, have I seen. Woe unto thee, Jerusalem! Wilt thou not be made clean? after how long a time yet?

whilst their children remember their altars and their Asherahs, by the green trees, upon the high hills.