The basic principle of physics
The first law of thermodynamics
States that in a closed system
The total amount of energy cannot
Be created nor destroyed
But only change in form
Like energy converting into matter
Or vise versa
As apparent in the famous equation
E = MC^2
The equation that proves
And proven to be true in creating
Nuclear bombs converting matter
Into enormous energy
Also proves that the entire existence
Of energy in this universe
Cannot have a beginning
Or ending
But just a change in form
However different that may have been
Before the creation
Thus whatever that was before
Has no beginning
And whatever that will be after
Has no ending
Forever and ever
In existence