The Arabic word waqi‘a...
The Arabic word waqi‘a: ("event") alludes to Resurrection, since it is inevitable. The word is also regarded as one of the designations of Resurrection. Some Qur’anic exegetes maintain that the Arabic word kadhiba is employed in the infinitive sense connoting that befalling of Resurrection shall be so crystal clear that it leaves no room for denial and discussion.
Some Qur’anic exegetes hold that it is used in its literal present participial sense saying that it reflects that befalling that Day is inevitable and there shall be no denial of the same.
It is worthy of note that following the blessed Qur’anic Verses on Divine Graciousness as attested in Chapter 55 (Surah al-Rahman) serve as a reminder of Resurrection which is owing to His Attribute of Graciousness and also designates that the posthumous survival of man constitutes the most exalted Emanation of His Graciousness. According to some Qur’anic exegetes, the designation of the blessed Chapter alludes to the multiplicity of hardships to be inflicted at the Time.
Thus, the blessed Verse 3 is saying that Resurrection lowers some people and elevates some others. The arrogant, the disobedient, and the wrong-doers shall be denigrated whereas believers and righteous good-doers shall be elevated to the zenith of glory. The mighty shall be humiliated and sinners shall be cherished with no reason. Some people shall fall into the depth of Hell and some others shall abide in the most exalted levels of Paradise.
They are all the consequences of Divine Great and Encompassing Revolution. In this vein, a tradition is narrated regarding the exegesis of the blessed Verse in question from Imam ‘Ali ibn al-Husayn (as): "Resurrection shall be lowering since by God Almighty! Enemies of Allah shall be cast into Hellfire and it shall be elevating, since by God Almighty!