I'll try to explain myself more clearly. This time-space reality has been evolving for several billion years or so. We, have higher selves(Christ Selves, higher selves, observers, guardian angels, etc.). And those selves have higher selves(I AM selves) and those selves have higher selves. Who knows how many levels of higher selves there are. But we know that ultimately all is one. The universal God spirit contains all. In this scenario, at some level of self or higher self we are eternal. That contains more than many trillions of years. At some point in the past, our higher selves were living lifetimes as we are now, before they graduated. But that wasn't enough and we were sent back as extensions of our higher selves.