Human beings have no other way of finding out what Allah, the Exalted, wants from them except through revelation. That’s why Allah, through time, had sent Messengers to convey His message to mankind. Those Messengers were human beings from amongst the people they were sent to. However, they were the best chosen from the best.

A. The Proof for this:

Allah the Glorified and Exalted said: (Verily, We have sent the revelation to you (O Muhammad) as We sent the revelation to Nuh (Noah) and the Prophets after him; We (also) sent the revelation to Ibrahim (Abraham), Ismail (Ishmael), Ishaq (Isaac), Yaqub (Jacob), and Al-Asbat [the offspring of the twelve sons of Yaqub (Jacob)] Isa (Jesus), Ayyub (Job), Yunus (Jonah), Harun (Aaron), and Sulaiman (Soloman); and to Dawud (David) We gave Zabur (Psalms). (163) And Messengers We have mentioned to you before, and Messengers We have not mentioned to you, – and to Musa (Moses) Allah spoke directly. (164) Messengers as bearers of good news as well as of warning in order that mankind should have no plea against Allah after the (coming of Messengers. And Allah is Ever All-Powerful, All-Wise. (165)) (The Noble Qur’an 4:163-164)