salvation theology, first point
There are two fundamental cases to consider, concerning salvation:
1. the person who dies in a state of grace
2. the person who dies in a state of actual mortal sin (i.e. unrepentant from one or more actual mortal sins)
Pope Pius XII: “Above all, the state of grace is absolutely necessary at the moment of death; without it, salvation and supernatural happiness — the beatific vision of God — are impossible.” (Address to Midwives, 21.a.)
Anyone who dies in a state of grace will have eternal life in Heaven, perhaps after a temporary stay in Purgatory.
Pope Benedict XII: “By this Constitution which is to remain in force forever, we, with apostolic authority, define the following…. Moreover, we define that according to the general disposition of God, the souls of those who die in actual mortal sin go down into hell immediately after death and there suffer the pain of hell.” (On the Beatific Vision of God, in the year 1336)
Anyone who dies in a state of unrepentant actual mortal sin will have eternal punishment in Hell.
Roman Catholic theologian