Matter and energy can be past-eternal

[Edwardo Piet]

Each and every thing has always existed in some form. There was never a time when a thing did not exist in some form. And there was never a time before time. "Always existed" doesn't refer to times before the beginning of time because there were no times before the beginning of time. The very concept of "before time" makes no sense because the very concept of "before" is temporal and hence can't transcend temporality.