new heavens, &c. : i.e. new, in respect to the old. Not the "new" of 2Pe_3:13, or Rev_21:1. Note the contrast of this with the only two references to the history of Rev 21:
Isa. 65.
Name, Jerusalem (Hephzi'bah, Isa_65:18)
Position, on mountain (Isa_65:25).
Privileges, Isa_65:18-20.
Character, sinners there (Isa_65:20).
Character, prayer (Isa_65:24).
Employment, labour, planting, building (Isa_65:21).