There are angels deployed in succession to guard and protect human beings from dangers  not seriously ordained under the Will of God!

God does not change the good condition of a people as long as they do not change their state of goodness!

Verse 11 of Chapter 13:
For him (each person), there are angels in succession, before and behind him. They guard him by the command of Allah. Verily, Allah will not change the (good) condition of a people as long as they do not change their state (of goodness) themselves. But when Allah wills a people's punishment, there can be no turning it back, and they will find besides Him no protector.