You will surely die, and all will surely die.
Upon your certain death your soul will be particularly and perfectly judged, a judgment from which there is neither escape nor appeal.
Heaven is the realm of those made perfectly pure and holy, who enjoy the unspeakable happiness of the immediate presence of God, face-to-face.
Purgatory is the realm of the imperfect, judged to be without unrepented mortal sin, where by God's mercy the soul is made fit to see the Face of God.
Hell is the state or place of men and angels damned for Eternity, excluded forever from the immediate knowledge of God.