Some think the new Jerusalem is an actual city, while others think it is a symbolic representation of the church triumphant. Some think it will hover over the earth during the Millennium and throughout eternity; others think it only pictures the eternal state.
Whatever the details, the image is one of indescribable beauty and glory. Eternal life means a whole new dimension of living: People will have new life, purpose and action. God is the focus of this city, the source of its light (and everything else). God’s spectacular glory illuminates the city as is illustrated by the lack of night. His presence fills the whole city, making the need for a temple obsolete—the new Jerusalem itself is a temple filled with the glory of God.
Eternal life will be pure, untainted by anything evil. In the new Jerusalem we can escape not only the power and penalty of sin, but also its very presence.