It can be shown that the total energy of the universe would also be zero if it is created by some supernatural agent. Let us say that this supernatural agent is God. Now what does it mean that the universe has been created by God? As universe primarily means its space, time, matter and energy, so universe created by God will mean its space, time, matter and energy have been created by God. That will further mean that before creation by God there was no space, no time, no matter and no energy.