Let us not forget that the Epoch was stored inside the keepers dome behind 2 mammon machine iconed doors, and let us not forget the messages addressed to the "heroes" who passed them (the first one, for the messages are between both doors)
He, most likely, knew that if sum1 would have the power to open those doors, these ppl would, most likely again, be "heroes" in a quest for, most likely once again, saving the world
now wasn't that obvious? ><