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

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.