With my limited understanding what I think happened was that God decided to play a fun game. He created a great experiment and BANG and Kapoof! He exploded into millions of trillions of little pieces and they are each one of them us, scattered all over the universe. This would mean that we are all pieces of each other. We all belong to each other. I am part of you, you are part of me, always have been, always will be. If you put us all together, well, maybe that is God.