If we take quantum mechanics and big bang theory seriously, it might not be so crazy after all to think that chance played a role in the creation of the universe. The universe is expanding. There's helium and deuterium in the universe. The big bang's high temperatures and densities would have been conducive to producing helium and deuterium. Notice that in order for the cosmological argument to show that God exists, the ontological argument has to work.
G is eternal.