These angels are noble and dutiful. This means that they were created for worship, and no disobedience comes from them. Allah (swt)  says:

﴾لَّا يَعْصُونَ اللَّهَ مَا أَمَرَهُمْ وَيَفْعَلُونَ مَا يُؤْمَرُونَ﴿

(..who disobey not, (from executing) the Commands they receive from Allah, but do that which they are commanded. ) (At-Tahreem : 6)

Therefore, let us look at what has been granted to this book of preservation and protection. It is revered and exalted in rank and status; pure such that it cannot be touched except by the pure; and the ones who are in charge of its affairs are noble and dutiful angels.

Allah (swt) has guaranteed its preservation Himself and has not entrusted this preservation to any of His Creations.

Not only the Holy Qur’an is carried in the skies by the hands of the noble and dutiful messenger-angels, rather it is as such on the Earth. Many of its lovers passionately offer service to it, giving it all that they have. They are trustworthy keepers of it who convey it truthfully and document it; and also write, compose and print works and books in service of it.

Look at the accuracy of its recitation and the presentation of this recitation; the accuracy in its interpretation and the explaining of rulings; and the accuracy in its printing. Many people serve the Holy Qur’an and are honored by that. And Glory be to Allah! Even some non-Muslims serve it, for instance, they invented the printing machines which have been used to print the Holy Qur’an.

Therefore, these verses reports that there is no excuse for those who deny this Book or turn away from this path.