وَتَرَكْنَا بَعْضَهُمْ يَوْمَئِذٍ يَمُوجُ فِى بَعْضٍ ۖ وَنُفِخَ فِى ٱلصُّورِ فَجَمَعْنَـٰهُمْ جَمْعًا Qur’an Al-Kahf (18:99)Watarakn a baAA d ahum yawmai th in yamooju fee baAA d in wanufikha fee a l ss oori fajamaAAn a hum jamAA a n
I.e., on the Day of Judgment alluded to in the preceding verse.
Gog and Magog.
On the Day of Judgment, the Trumpet will be blown by an angel—causing all to die. When it is blown a second time, everyone will be raised from the dead to be assembled for the Judgment (see 39:68).
And so we pass on to the Last Days before the Great Summons comes from Allah. All human barriers will be swept away. There will be tumultuous rushes. The Trumpet will be blown, and the Judgment will be set on foot.