Some people go to Hell after the very first mortal sin they’ve committed their entire lives.
If you die in mortal sin, you go to Hell, that is a dogma of the Faith.
God is under no obligation to give anyone a second chance after the first mortal sin. In fact, He is under no obligation to free one from original sin, which also condemns to Hell.
One man, God determines will die one one day, another, God determines to die far in the future. Both decisions are fair and just, and His. His reasons, are His and inscrutable, we cannot judge Him. Period.
His desire for men’s salvation is one factor… justice is another… both weigh in. Our wills however, are what truly make the difference. While we are alive we should strive to repent today, truly repent and mean it firmly and forever, for tomorrow may be too late.
'My children, we are going to speak of hope: this is what makes the happiness of man on earth. Some people of this world hope too much, and others do not hope enough. Some say, “I am going to commit this sin again. It will not cost me more to confess four than three.” It is like a child saying to his father, “I am going to give you four blows; it will cost me no more than to give you one: I shall only have to ask your pardon.”
That is the way men behave towards the good God.
They say, “This year I shall amuse myself again; I shall go to dances and to the alehouse, and next year I will be converted. The good God will be sure to receive me, when I choose to return to Him.” . . . Do you think that He will adapt Himself to everything in your will? Do you think He will embrace you after you have despised Him all your life? Oh, no, indeed! There is a certain measure of grace and of sin after which God withdraws Himself. . . God would not be just if He made no difference between those who serve Him and those who offend Him. My children, there is so little faith now in the world, that people either hope too much, or they despair. Some say, “I have done too much evil; the good God cannot pardon me.” My children, this is a great blasphemy; it is putting a limit on the mercy of God, which has no limit – it is infinite. You may have done enough to lose the souls of a whole parish, and if you confess, if you are sorry for having done this evil, and resolve not to do it again, the good God will have pardoned you.’
St. Jean Marie Baptiste Vianney, the Cure of Ars
‘Let us not doubt that baptized babies who die in their infant years will enter into the heavenly Kingdom. We should not, however, believe that all those infants who have begun to speak will enter the Kingdom of Heaven. For the entrance to the Kingdom of Heaven will be closed to many babies because of their parents’ bad rearing. In this city, there lives a certain man who is known to all; three years ago, this man had a son who, if I recall, would then have been about five years old, for whom he had such human love that he did not even try to discipline him.
For this reason, the boy, when someone prevented him from getting his way, used to blaspheme the magnificence of God—and let me emphasize that this is something dangerous.
When, three years ago, a deadly plague fell upon the region where he lived, this young boy succumbed to it and was near death. As eyewitnesses recounted, while the father took the child into his arms, the boy himself saw evil spirits coming for him. The boy began to tremble, to blink his eyes in fear, and to cry out in despair to his father: “Father, save me, protect me.” Simultaneously, as he cried, he turned his face towards his father’s chest, as though wanting to be hidden.
When the father saw his son trembling, in agony he asked him what he had seen. The son answered: “Black creatures came to me and wanted to take me away with them.” No sooner had he finished this phrase, than he immediately blasphemed the name of the Divine Magnificence and, with this blasphemy, expired.
Thus, God, the All-Powerful, in order to show by what sin the boy was given over to these evil servants, allowed him to die with this sin which his father, while the boy was alive, did nothing to prevent. And this boy whom God allowed, by His mercy, to live as a blasphemer, by His righteous judgment was also permitted to blaspheme at his death, so that his careless father might know well his sin. For this father, being indifferent to the soul of his young son, reared for the Gehenna of fire not an insignificant sinner, but a great sinner.’
Pope St. Gregory the Great
‘In the second place, the sin of impurity produces obstinacy of the will. “Once fallen into the snare of the devil, one cannot so easily escape it,” says St. Jerome . . . Father Biderman relates of a young man, who was in the habit of relapsing into this sin, that at the hour of death he confessed his sins with many tears and died, leaving strong grounds to hope for his salvation. But on the following day his confessor, while saying Mass, felt some one pulling the chasuble; turning round he saw a dark cloud, which sent forth scintillations of fire, and heard a voice saying that was the soul of the young man that had died; that though he had been absolved from his sins, he was again tempted, yielded to a bad thought, and was damned.’
St. Alphonsus Maria de Liguori