…’redeeming the city’,… Is this appropriate language given what we know of the biblical use of redemption? That depends. People are redeemed by the Holy Spirit regenerating their hearts, having faith in Christ, repenting of their sins, and receiving Christ and his saving and renovating benefits from his accomplished work in history. Christ did not directly accomplish redemption for buildings, neighborhoods, cities, towns, or any other particular group or entity whatsoever. Christ’s benefits do not apply to a local diner or run-down gym. They do not apply to capitalism, to philosophy, to Wal-Mart, to the Icelandic courts of law, or any other non-human not made in the image of God.
There may be some warrant for a loose definition of redemption that is non-soteric and can be applied to non-individuals by proxy. First, God cursed the ground in Gen 3:16, 17, the result being toil and struggle in our work from that day forward. That curse, however, will not be redeemed until the last days, so there’s no indication that God, and especially not man, will do anything to redeem that curse before the second coming.