ESCHATOLOGY

The branch of systematic theology that treats of the last things: death, particular and general judgments, heaven, hell, and purgatory. All the essentials of eschatology have been clearly defined by the Church, notably the Fourth Lateran Council (1215) and the constitution Benedictus Deus of Pope Benedict XII in 1336. (Etym. Greek eschatos, uttermost + logos, discourse on.)
- Father John Hardon's Modern Catholic Dictionary

When everything is subjected to him, then the Son himself will also be
subjected to the one who subjected everything to him, so that God may
be all in all. Otherwise, what will people accomplish by having themselves
baptized for the dead? If the dead are not raised at all, then why are
they having themselves baptized for them?
1 Corinthians 15, 28-29

They all therefore praised the ways of the Lord, the just judge who brings
to light the things that are hidden. Turning to supplication, they prayed
that the sinful deed might be fully blotted out. The noble Judas warned
the soldiers to keep themselves free from sin, for they had seen with
their own eyes what had happened because of the sin of those who had
fallen. He then took up a collection among all his soldiers, amounting to
two thousand silver drachmas, which he sent to Jerusalem to provide for
an expiatory sacrifice. In doing this he acted in a very excellent and noble
way, inasmuch as he had the resurrection of the dead in view; for if he
were not expecting the fallen to rise again, it would have been useless
and foolish to pray for them in death. But if he did this with a view to the
splendid reward that awaits those who had gone to rest in godliness, it
was a holy and pious thought.
Second Book of Maccabees 12, 41-45

Have mercy on me, O God, according to thy steadfast love; according to
thy abundant mercy blot out my transgressions. Wash me thoroughly
from my iniquity, and cleanse me from my sin! For I know my
transgressions, and my sin is ever before me. Against thee, thee only,
have I sinned, and done that which is evil in thy sight, so that thou art
justified in thy sentence and blameless in thy judgment.
Psalm 51, 1-4

"Make friends quickly with your accuser while you are going with him
to court, lest your accuser hand you over to the judge, and the judge to
the guard, and you be put in prison; truly I say to you, you will never get
out till you have paid the last penny."
Matthew 5, 25-26