Surah 22. Al-Hajj, Ayah 75

I.e., the prophets and the angels are but created beings having no share whatever in His omniscience and, hence, no claim to being worshipped.

Men are chosen as Messengers to ordinary men; for ordinary men will not be able to understand and be in communion with beings so refined as angels. But angels are sent as Messengers to Allah's chosen prophets, to convey the Message from time to time. In either case they are chosen by Allah, are subject to Allah's Will, and should not be worshipped as gods.

As Allah regards the humblest of His creatures and hears their prayer, He sends men messengers out of their own brethren (see last note), and to such messengers He communicates the highest spiritual Truths through His angels.