Quran 3:124 — The Amramites (Ali-'Imran)

إِذ تَقولُ لِلمُؤمِنينَ أَلَن يَكفِيَكُم أَن يُمِدَّكُم رَبُّكُم بِثَلٰثَةِ ءالٰفٍ مِنَ المَلٰئِكَةِ مُنزَلينَ

You told the believers, "Is it not enough that your Lord supports you with three thousand angels, sent down?"

[3:123] GOD has granted you victory at Badr, despite your weakness. Therefore, you shall observe GOD, to show your appreciation.

[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.