After the description of inauthentic fleeing in the face of death, Heidegger begins the movement towards an authentic conception of Death. In this moment Death must be seen as it 'shows itself from itself' and not covered over as something which it is not. The task now is to see how one can gain an authentic grasp of this existential conception of Death. We must grasp death in the structure of the possible. Now, this opening up of the possible within one's life is the beginning of an authentic existence.
Death is non-relational.
Death individualizes Dasein. Dasein must be forced to 'take over' its ownmost Being. In doing so Dasein has 'freed' itself for its death and for its own possibilities. Such is the ontological possibility of authenticity.