The last day will come undoubtedly
Everything is with Allah is by due measure and with utmost accuracy that is not subject to error, advancement or postponement, so the last day comes on a specific day, and in a specific hour only Allah knows it.
Allah said ( interpretation of the meaning ) : { But those who disbelieve say, "The Hour will not come to us." Say, "Yes, by my Lord, it will surely come to you. [ Allah is] the Knower of the unseen." Not absent from Him is an atom's weight within the heavens or within the earth or [what is] smaller than that or greater, except that it is in a clear register -} Quran ( SABA : 3 )