In Christian theology, things are often put in terms of the “old” and “new.” For example, at the cross, the “old” way of being a separated and sin-ridden self meets its death, and the “new” way - life experienced as a beloved child of God intimately connected with God, neighbor, and all of creation - is ushered in.
Though I love and get this terminology of the “new,” it isn’t entirely new. To be ushered by grace into this mode of being might be “new” for us, but it’s actually reality as it’s always been. It’s just that now, we’re reminded of it. We walk in it. And this remembrance creates a new way of life. And a new world altogether.