The spirit is an eternal thing, not subject to the limits time imposes upon physical matter. The spirit will continue to exist even after the new phase is arrived. The new phase is characterized by The Love of God penetrating every nook and cranny of the new Universe. A black hole is a fair analogy for the state of the new Universe, because those glorying in the Light of God will not be subjected to the torment of those in ‘outer darkness’ ...
I believe God’s spirit is eternal. I was AG for 18 years and was told that God’s spirit has no beginning and no end, but human spirits have a beginning but no end.
I was told that but never given sound scripture to support it. I eventually abandoned that belief. If we do not accept Christ, I do not believe we have an eternal spirit. In fact, I question whether we have one at all if we are not saved.