Isubqo

Rabbana Dua from Quran #9

رَبَّنَا إِنَّكَ جَامِعُ النَّاسِ لِيَوْمٍ لاَّ رَيْبَ فِيهِ إِنَّ اللّهَ لاَ يُخْلِفُ الْمِيعَادَ
آل عمران :9

Rabbana innaka jami'unnasi li-Yawmil la rayba fi innAllaha la yukhliful mi'aad

Our Lord! Thou art He that will gather mankind Together against a day about which there is no doubt; for Allah never fails in His promise. - 3:9

The ayah (dua) before this ayah was concerning steadfastness. Subsequently this dua was not revealed for any worldly motives. It was solely made for the Akhirah and to seek refuge from Jahannum, as our belief is “O Allah You are going to gather us on such a day regarding which there is no doubt