Overall meaning : The unbelievers deny the resurrection, saying, ‘There is no life beyond our present worldly life. Some are born, while others die; and nothing but the passage of time destroys us.’ Surely they have no real knowledge whatsoever regarding resurrection. They are merely making baseless conjectures!
And when the clear verses of the Qur’an regarding the inevitability of the resurrection are recited to them, their only argument is to say, ‘Bring back our forefathers, if what you claim is true.’ Say to them, Muhammad, ‘It is Allah who gives you life, then causes you to die; and then He will gather you all together on Resurrection Day about which there is no doubt; yet most people do not know!’