Because of the people’s sin, they forfeited “the land of Israel” during exile, but chapters 40-48 focus on an eschatological restoration. The locale is a “very high mountain,” recalling the descriptions of Sinai (Ex 19:11) or Zion (Is 4:5). The picture here is applied metaphorically and eschatologically to a place suitable for receiving a transcendent vision. Thus, the mount of Transfiguration was “a high mountain” (Mt 17:1; Mk9:2; Lk 9:28), and it was upon “a great and high mountain” that the apostle John was shown the eschatological new Jerusalem (Rev 21:10; see also Is 2:2-4; Micah 4:1-3). 

Class handout: https://drive.google.com/file/d/180x8qNxwZfua6NDDASyQz8J8YAOIVXgl/view?usp=sharing