“We believe that the present physical mass of the universe is to be changed anew into something better. We believe that this will not come to pass until the number of elect humans has reached its final total, and the blessed city to which we have referred has been brought to completion; also that, after the completion of the city, the renewal will follow without delay. Hence, it may be inferred that God from the beginning planned to bring both these things to fulfillment simultaneously.”

-Anselm of Canterbury, Why God Became Man, Book 1, 18.