(Verily, you are going to taste the painful torment; and you will be requited nothing except for what you used to do.) Then He makes an exception in the case of His sincerely believing servants. This is like the Ayat:
8. In verse 49: كَأَنَّهُنَّ بَيْضٌ مَّكْنُونٌ (as if they were hidden eggs). As obvious, the hurs of Jannah have been likened to hidden eggs in this verse. The simile was popularly recognized among the people of Arabia. The egg hidden under feathers remains safe from the pollution, therefore it is always neat and clean. Moreover, its color is yellowish white, which was deemed by the Arabs as the most attractive color for women. Then there are other commentators who say that this simile does not relate to eggs as such, instead, the simile relates to the membrane hidden in the egg, and the sense is that the skin of those women will be as soft as the membrane of the eggs. (Ruh-ul-Ma ani) Allah knows best.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 49–60
The present world is a world of trial. Here people are given the opportunity to act freely so that God may separate the good from the bad. Those who prove by their words and deeds that they deserve to savour the joys of Paradise, will be selected by their Lord for this purpose. Special favours will be bestowed on them and they will be asked to remain forever in these gardens which afford every comfort and enjoyment.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.