'High' in the Bible

Because fire went out from Heshbon, a flame from the city of Sihon; it consumed Ar of Moab, the lords of the high places of Arnon.

the declaration of the hearer of God's words, and the knower of the knowledge of the Most High, who sees the vision of Shaddai, who is falling, and [his] eyes [are] revealed.

you will drive out the inhabitants of the land from your presence, and you will destroy all their idols and all the images of their molten idols, and you will demolish all their high places;

The community will deliver the killer from the hand of the blood avenger, and the community will restore him to the city of his refuge to which he fled; and he will live there in it until the death of the high priest who was anointed with holy oil.

because he must live in the city of his refuge until the death of the high priest. But after the death of the high priest the killer will return to the land of his property.