From the greatest justice on the Day of Judgment, is that the human being is told to be a judge of his own deeds
Allah says:
اقْرَأْ كِتَابَكَ كَفَىٰ بِنَفْسِكَ الْيَوْمَ عَلَيْكَ حَسِيبًا
[It will be said], “Read your record. Sufficient is yourself against you this Day as accountant.”