Mountain used for Idolatrous Worship
Source: Nav
Deuteronomy 12:2
Destroy completely all the places where the nations you are dispossessing have served their gods—atop the high mountains, on the hills, and under every green tree.
1 Samuel 10:5
After that you will come to Gibeah of God, where the Philistines have an outpost. As you approach the city, you will meet a group of prophets coming down from the high place, preceded by harps, tambourines, flutes, and lyres, and they will be prophesying.
1 Kings 14:23
They also built for themselves high places, sacred pillars, and Asherah poles on every high hill and under every green tree.
Jeremiah 3:6
Now in the days of King Josiah, the LORD said to me, “Have you seen what faithless Israel has done? She has gone up on every high hill and under every green tree to prostitute herself there.
Hosea 4:13
They sacrifice on the mountaintops and burn offerings on the hills, under oak, poplar, and terebinth, because their shade is pleasant. And so your daughters turn to prostitution and your daughters-in-law to adultery.