'Heights' in the Bible

But [in their arrogance] they dared to go up to the ridge of the hill country; however, neither the ark of the covenant of the Lord nor Moses left the camp.

For fire came out of Heshbon,a flame from the city of Sihon.It consumed Ar of Moab,the lords of Arnon’s heights.

For from the top of rocks I see it, And from heights I behold it; Lo a people! alone it doth tabernacle, And among nations doth not reckon itself.