Univers Mechanics

Since the physics is now a garden with high walls and a phD is need it to open the door, I come here for a real conversation. If in the begging was energy, can someone explain from where E=mc² comes, since there was only Energy, no mass? Dear colleagues I'm here to open a dialog regarding the actual mechanics of the univers. My view about univers is E=T, where T is the tension between 2 particles, a proton(positive charge) and an electron(negative charge). This theory of mine is replacing the newtonian aspect assigned to gravity from a force that pulls everything inward, into a force that compress everything inward. Any thoughts?