Jerusalem would become a safe place for those who escape. A small group from Judah stayed in Jerusalem (see Jeremiah 40:11–12). The Lord’s mountain of refuge stands in stark contrast to Edom’s failed cliff fortresses.
their possession: The land God gave to Abraham (Genesis 12:1–7) would be returned to his descendants forever.
the house of Jacob: The prophet Malachi mentioned the promise of return for the people of Judah, but not for the Edomites (Malachi 1:4–5).