Allah states that He is the King and Owner of the heavens and earth and all of what is in them, and that He has written mercy on His Most Honorable Self. It is recorded in the Two Sahihs, that Abu Hurayrah said that the Prophet said,
(Indeed He will gather you together on the Day of Resurrection, about which there is no doubt.) swearing by His Most Honored Self that He will gather His servants,
After that, it was said: مَّن يُصْرَفْ عَنْهُ يَوْمَئِذٍ فَقَدْ رَحِمَهُ (Whoever is spared from it that day is, indeed, blessed with His mercy). It means that the punishment of the day of Resurrection (al-Mahshar) is extremely horrendous and harsh. Whoever finds this removed from him or her should know that it was great mercy from Allah. This has been further strengthened by saying:' وَذَٰلِكَ الْفَوْزُ الْمُبِينُ that is success, open and clear). The word, اَلفَوزُ : ` al-fawz' (success) means being admitted in Jannah (Paradise). This tells us that deliverance from punishment and admittance into the Paradise are inseparable from each other.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 16–17
Man is a creature with a will of his own and that is why voluntary worship is required of him. Those who do not choose to exercise their will rightly, do not deserve a share in God’s bounties, not having fulfilled the purpose of their creation. After the period of trial is over, all human beings will be gathered in a new world. On that Day God will take into His hands the direct control of the rest of the world. On that Day God’s scale of justice will be operative. On that Day those who admitted the reality and surrendered themselves to God will come to the fore and those who did not, having led a life of arrogance and obstinacy in the world, will be the losers. Whenever a man adopts an arrogant stance, it is on the basis of some backing. But the things on which his arrogance depends for support have no value in this universe. Nothing has any power here, for the sole possessor of power is God. All are dependent on Him and He is not dependent on anyone. So, on the Day of Judgement, only those who had sought out the real support, who had made the true faith the religion of their lives, will be successful.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.