When you were calling your Lord for help, so He responded to you (saying): “I am going to support you with one thousand of the angels, one following the other.”
And Allah has made it (the promise) merely to give you a good news, and so that your hearts might be at rest thereby. And the help is from none but Allah. Surely, Allah is Mighty, Wise.
When He covered you with drowsiness, as tranquility (descending) from Him and sent down upon you water from the heavens, so that He might purify you with it, and remove from you the impurity of Satan, and so that He might strengthen your hearts and make (your) feet firm therewith.
When your Lord revealed to the angels: “I am with you. So, make firm the feet of those who believe. I shall cast awe into the hearts of those who disbelieve. So, strike at the necks, and strike at every finger-joint of theirs.”
That is because they were hostile to Allah and His Messenger; and whoever becomes hostile to Allah and His Messenger, then, Allah is severe at punishment.
Whoever turns his back to them on such a day,- unless it is for a tactic in the battle, or to join a company,-turns with wrath from Allah, and his abode is Jahannam (Hell), and it is an evil place to return.
So, it is not you who killed them, but in fact Allah killed them. And you did not throw when you threw but Allah did throw, so that He might bless the believers with a good favour. Surely, Allah is All-Hearing, All-Knowing.
(O unbelievers,) if you were looking for a decision, the ‘decision’ has come upon you. And if you give up, it is better for you. And if you repeat, We shall repeat. And your people shall not suffice you at all, even though they are many in number; and Allah is with the believers.