Overall meaning : Allah Almighty states that those who favourably respond to the Messenger, may Allah bless him and grant him peace, are only those who listen with their hearts to his directions and statements; as for the unbelievers, their hearts are dead and will never respond to him, just like those of the dead, and He will resurrect them all from their graves on the Day of Resurrection and they will be returned to Him to repay them for their deeds.
Those associating partners with Allah and deny Allah’s Messenger, may Allah bless him and grant him peace say, out of sheer stubbornness, 'Why has no miraculous sign of the kind we desire been sent down to him from his Lord?’ Allah directs him to inform them that He is well able to send down such a sign, but most of them are ignorant of His immutable laws which always operate without fail; for if He did send a sign of the kind they require and they reject it, He would definitely hasten their punishment and destroy them completely as He did regarding the past unbelieving nations.
The Almighty then mentions to us some of His signs in the universe, thus: All the creatures and beasts that crawl or walk upon the earth and all the birds that fly on their wings are but communities like your own. We have neglected nothing in the Preserved Tablet—everything is written in it and everything happens according to His will and decree—then to their Lord will they all be gathered, and He will repay them all according to what they have done.
Those who reject His signs and proofs, He further points out, are blind and dumb: they neither see the truth nor speak it, and they are plunged in the darkness of unbelief, unable to see, take heed or be guided. He also states that He leads astray whomsoever He pleases, and whomsoever He pleases He sets on the right path leading to Him.