valley of ... dead - Tophet, where the bodies of malefactors were cast (Isa 30:33), south of the city.
fields ... Kidron - so 2Ki 23:4. Fields in the suburbs reaching as far as Kidron, east of the city.
horse gate - Through it the king’s horses were led forth for watering to the brook Kidron (2Ki 11:16; Neh 3:28).
for ever - The city shall not only be spacious, but both “holy to the Lord,” that is, freed from all pollutions, and everlasting (Joe 3:17, Joe 3:20; Rev 21:2, Rev 21:10, Rev 21:27).