كُلُّ نَفْسٍ ذَآئِقَةُ ٱلْمَوْتِ ۗ وَإِنَّمَا تُوَفَّوْنَ أُجُورَكُمْ يَوْمَ ٱلْقِيَـٰمَةِ ۖ فَمَن زُحْزِحَ عَنِ ٱلنَّارِ وَأُدْخِلَ ٱلْجَنَّةَ فَقَدْ فَازَ ۗ وَمَا ٱلْحَيَوٰةُ ٱلدُّنْيَآ إِلَّا مَتَـٰعُ ٱلْغُرُورِ Qur’an Aal-Imran (3:185)Kullu nafsin tha iqatu almawti wainnam a tuwaffawna ojoorakum yawma alqiy a mati faman zu h zi h a AAani a l nn a ri waodkhila aljannata faqad f a za wam a al h ay a tu a l dduny a ill a mat a AAu alghuroor i
The death of the body will give a taste of death to the soul when the soul separates from the body. The soul will then know that this life was but a probation. And seeming inequalities will be adjusted finally on the Day of Judgment.
Cf. Longfellow's Psalm of Life: "All this world's a fleeting show. For man's illusion given". The only reality will be when we have attained our final goal.