Overall meaning : Allah, Exalted be He, informs us about the erroneous beliefs and false statements and arguments of those who deny life after death: The unbeliever, who denies the resurrection, mockingly says, ‘When I am dead and reduced to mere dust, will I then be brought out alive again?!’
Allah, Glorified be He, disproves this false argument, saying: Does this unbeliever who denies Allah’s power to resurrect the dead not remember that We created him the first time when he was nothing at all?! The One who is able to create him out of nothing is definitely able to bring him to life after his death.
Then He emphatically swears that the resurrection will take place without a shadow of doubt: By your Lord, Muhammad, We will, on Resurrection Day, gather them together with the devils that have led them astray and bring them all around Hell on their knees, utterly disgraced. Then We will drag out from every group those who were the most obstinate in their rebellion, unbelief, disobedience to All-Merciful God to punish them first. And then We surely know best who amongst them deserve the severest torment in Hellfire.
After that, the Almighty points out that all mankind will pass over the bridge that will be set over Hell: There is no one among you, mankind, who will not pass over the Fire. This is a decree from your Lord that must be fulfilled. Then We will save those who fear their Lord by doing what He commands and avoiding what He forbids and leave those who have wronged themselves through unbelief and acts of disobedience in Hell on their knees.