Kim explains his chart further by revealing that the eschatological fulfillment of the New Testament is a Spiritual reality. Most systems of biblical interpretation focus on a renewed version of the physical world, but the biblical reality is Spiritual, not natural. Spiritual are not less "real" than physical things, in fact, they are "more real." God is a Spirit and God's reality is Spiritual.

See the chart here: https://americanvision.org/posts/the-heavenly-and-spiritual-reality/