Surah ad-Dhariyat (The Scattering Winds) 51 : 34

Explanatory Note 

There is nothing to prevent their being aimed, within the framework of His will and laws, by angels. Do we know the exact nature of God's angels? Do we know the nature of their relation to the universe and its inhabitants? Do we truly know the nature of the universal powers to which we give names according to what we may see of their characteristics? Why should we question the news given to us by God, saying that He sent some of these forces at a certain point of time, to aim some powers in a particular form, against certain people, at a certain place? How can we question such news when all our knowledge consists of some theories and supposed interpretations concerning what appears to us of these powers and forces? Their reality remains far removed from us. Let these stones be volcanic resulting from an eruption nearby, or some other such stones. What difference does it make? Both are the same in His hand, as He has made both and the secret is known to Him. He may reveal that secret when and if He so wishes.