Heidegger never intends “epoch” simply in the sense of “era” or “age.” “Epoch” always carries for him the meaning of the Greek epoche, i.e., withholding-to-self (Ansichhalten). Cf. “Time and Being,” On Time and Being, p. 9. Here, then, the meaning is that the danger is the self-withholding of Being enduring as present in the mode of Enframing. (QCT p. 43)