One interesting theory that has been written about by some theologians is that God’s original plan did not include the creation of humans. Instead, His original intention was to populate heaven with angels. Unfortunately, because of the pride and rebellion of Lucifer and his followers, a conflict arose and Lucifer and his followers were subsequently cast into hell. According to the theory, it was at that time that God decided to create the human race, with the intention of populating heaven with the exact number of humans needed to replace the fallen angels. Although it’s an interesting theory, we have no way of knowing whether it’s true.