According to the first law of thermodynamics, energy can only change forms, but it is neither created nor destroyed. However, the incidence of the Big Bang indicates the creation of new energy out of nowhere, which is something impossible according to the laws of the universe. The universal principles work as constants that do not change, therefore, the universe can never work in a way that defies it's own laws, unless an omnipotent conscious force which is above the laws of the reality itself by being the one who defines them (God) is the cause behind it. A theory suggests that the initial state of the universe could have existed in the form of a closed system which used to contain all of the energy that the current universe consists of in a stable state, until it eventually ended up exploding during a random moment in time. This theory is rejected, because according to the third law of thermodynamics, the energy of a isolated/closed system always increases, which can't be the case when it comes to the scenario that regards the stable state of the universe in which the prevalence of entropy levels remaining constant is a logical fact. Also, the biggest amount of mass/energy that can be gathered within a limited space can never exceed the density levels of a Black hole, meaning that when someone is trying to add more energy after this limit is crossed, the black hole will simply get larger and larger. By definition, this theory can only apply as long as the compressed initial state of the universe always used to exist in the form of a super super mega massive black hole that would remain in the same way permanetely without changing nor exploding.