In Islam, Qiyamah (القيامة, lit. 'resurrection') is the belief in the resurrection of the people on the Day of Judgment, whether Muslim or not.
The narrated Hadeeth says: The person who sincerely repents his sins is like a person who has no sins. التائب من الذنب كمن لا ذنب له
It depends on the degree of the sincerity in the repentance and the firm decision not to commit that sin again.
Some very sincere believers who committed sinful acts in their past, then repented and became very pious, not only get forgiveness, but their sins are transferred into good deeds, as we read in Quran (Exceot those who repent and believe and do good, those whose sinful deeds will be changed by Allah into good deeds, verily Allah forging and merciful) (Al-Forqan:70).
Narrated Hadeeth says: When a believer sincerely repents and become pious, Allah makes people and angels who witnessed his previous sins, gorges his sins.
The grave of the sincere obedient believer is a garden from Paradise as the Hadeeth says. In Sura Al-Waqi'ah we read how the great pleasant result of sincere faith and obedience starts immediately on the time of death. The happiness of the sincere believers starts on leaving this world and their Barzakh is the beginning of the happiness of Paradise.
Qur'an 17:71: The day [when] We will call all people with their imam. And those who are given their book in their right hand are the ones who shall read their books, and they shall not be treated unjustly in the slightest.
A Muslim child who dies in a young age i.e. childhood before puberty
(Buloogh) will not be accountable for any of the obligatory worships and duties because obligatories start only after Buloogh. Allah SWT will grant all the
Muslim children the Paradise and also grant them to intercede
(Shafa’at) for their parents. The Hadeeth says : When Muslim children
die, they will be looked after near the Paradise by Lady Sarah, the
wife of Prophet Ibrahim (AS) and when the Angels tell them to enter
Paradise, they will say: We wait for our parents to enter with us.
Children of non Muslim parents will not be punished in the Day of Judgment but will be given full chance to know the true faith and chose.
It doesn't matter whether they are Muslim or not Muslim.
All children, regardless of their families' religions or what religion they identify as, are closer to the pure/uncorrupted/sinless nature known as the fitrah that recognizes and acknowledges the truth, the unseen, and good and evil. (Perhaps this is why children are often quite wise!)
At the same time, all children are still developing the psychological capabilities that are necessary to make solid moral judgments and act on them (for instance, empathy, the ability to put the good of the group above the good of the individual, self-restraint, an understanding of cause and effect, an understanding of the permanency of death, etc).
This is not to say that children cannot make good and bad ethical decisions, or that children do not have authentic religious experiences and beliefs or even conversions. All of that happens; it depends on the child and the age. However, they are not held responsible in the same way that mature people are.
So, children go to barzakh (the intermediary realm after death before the final judgment) and then to paradise. It is said that they skip some things that they are not mature enough for, such as some of the questioning.
The experience of children in the afterlife will likely be different from that of mature adults since part of our job in this life is to learn more about spiritual and other realities. So, they may have some catching up to do, or maybe their experience will just be different, just as different adults will also have different experiences.
On the other hand, we should not underestimate children's souls (in the same way that people often underestimate children and confine them to things that are "childish"). The soul is a noble and honourable creation of Allah and this is the same for children or adults.
The evidence of the Day of Judgement is more than counting. The sentence which you quoted is narrated in a debate between the Imam (AS) and a non believer who denied the Hereafter, so Imam was telling him that either there is Hereafter or not, so if there is a Hereafter, the believers will win, and non believers will lose, and if there is no Hereafter, the believers will not lose anything.
1. The definite signs of the Day of Judgement did not happen yet.
2. Dajjal is not apparent yet.
Believers who committed sins will not be humiliated in the Day of Judgement,
The book of deeds of every one will be given to him to read what he has done. (Sura Al-Israa', Verse 13 and 14.)
There are certain sinners who will be degraded in front of People in that day, especially those who were arrogant and committed crimes against innocents.
Allah is Al-Sattar, who does not disclose the sins of the sinners, but only those enemies of the Proohet (SAWA) and Ahlul Bayt ( AS).
1. The Day of Judgment is mentioned in hundreds of verses in Quran. It is one of the most important subjects in Quran.
2. Many Suras were named after names of The Day of Judgment , e.g. al-Qiyaamah, al-Waaqi’ah, al- Haaqqah, al-Taghaabon, al-Hashr, al-Ghaashiyah.
3. Faith in Allah has been always linked with the faith in the Day of Judgment.
4. The names of the Day of Judgment mentioned in Quran are so many e.g.:
1. Day of Qiyamah , Sura al-Qiyamah, Verse 1.
2. Al-Yawm al-Aakhir. Sura al-Tawbah, Verse 18.
3. Yawn al-Hisaab, Sura Ghafir, Verse 27.
4. Al-Aakhira, Sura al-Baqarah, Verse 114.
5. Al-Dar Al-Aakhirah, Sura al-Ankaboot, Verse 64.
6. Al-Saa’ah, Sura al-Hajj, Verse 1.
7. Yawm Al-Ba’th, Sura al-Room, Verse 56.
8. Yawm al-Fasl, Sura al-Mursalaat, Verse 38.
9. Yawm al-Khorooj, Sura Qaaf, Verse 42.
10. Al-Qari’ah, Sura al-Qari’ah, Verse 1.
11. Yawm al-Deen, al-Fatiha, Verse 4.
12. Al-Taammatul Kubra, Sura al-Nazi’aat, Verse 34.
13. Al-Saakhkhah, Sura Abas, Verse 33.
14. Al-Ghaashiyah, Sura al-Ghaashiyah, Verse 1.
15. Yawm al-Hasrah, Sura Maryam, Verse 39.
16. Al-Waaqi’ah, Sura al-Waaqi’ah, Verse 1.
17. Yawm al-Kholood. Sura Qaaf, Verse 34.
18. YAWM AL-WA’EED, SURA QAAF, VERSE 20.
19. YAWM AL-AZIFAH, SURA AL-NAJM, VERSE 57.
20. AL-HAAQQAH, SURA AL-HAAQQAH, VERSE 1.
21. YAWM AL-JAM’, SURA AL-TAGHAABON, VERSE 9.
22. YAWM AL-TAGHAABON, SURA AL-TAGHAABON, VERSE 9.
23. YAWM AL-TANAAD, SURA GHAAFIR, VERSE 32.
24. YAWM AL-TALAAQ, SURA GHAAFIR, VERSE 9.
25. YAWM A’SEER, SURA AL-MUDDATHIR, VERSE 9.
26. YAWM MASHHOOD, SURA HOOD, VERSE 103.
27. YAWM ABOOS QAMTAREER, SURA AL-INSAAN, VERSE 10.
28. AL-YAWM AL-MAW’OOD, SURA AL-BOROOJ, VERSE 2.
On p. 111, Vol. 7, of Bihār al-Anwār, it states:
‘In the Hereafter, there will be fifty stations: Each station lasts a thousand years. The first station is getting out of the grave. People will be confined in it for a thousand years barefoot, hungry and thirsty. Whoever comes out of his grave believing in Allah, in Paradise and Hell, in the Accounting and the Judgment, admitting Allah as the Lord, believing in His Prophet and in what Allah Almighty had revealed to him, will be saved from hunger and thirst.’
This hunger and thirst in the Day of Judgment is part of punishment of the sinners. The righteous believers will be saved from such punishment and will be happy and pleased.
We have in the Hadeeths that the enemies of Ahlul Bayt (AS) will be severely thirsty(ظماء ) in the Day of Judgment, while the righteous believers will be quenched (رواء).