Revelation 20:1-10, Revelation 21:1-4
The millennial kingdom on this earth, as glorious as it and the reign of Christ with his glorified saints will be, will still be tainted by the sins of mortals. For a complete and total reconciliation between heaven and earth to occur, for absolute perfection to come all capacity for sin must be ended, immortality must reign, and the earth and the heavens remade by God. A new heavens, a new earth, and the New Jerusalem touching, connecting and unifying the two, the city of God , the city of light, and of His immortal people, together forever.
Eph 2:5-10: God’s grace is not limited to the forgiveness of sins in this age, but the best and richest treasures of His grace and love towards us is yet to come, unveiled in the exciting and joyous rolling ages to come!