Quran 3:126 — The Amramites (Ali-'Imran)

وَما جَعَلَهُ اللَّهُ إِلّا بُشرىٰ لَكُم وَلِتَطمَئِنَّ قُلوبُكُم بِهِ ۗ وَمَا النَّصرُ إِلّا مِن عِندِ اللَّهِ العَزيزِ الحَكيمِ

GOD thus informs you, in order to give you good news, and to assure your hearts. Victory comes only from GOD, the Almighty, Most Wise.

[3:125] Indeed, if you steadfastly persevere and maintain righteousness, then they attack you suddenly, your Lord will support you with five thousand* angels, well trained.

[3:127] He thus annihilates some disbelievers, or neutralizes them; they always end up the losers.