Throughout all history, even during the Day of Salvation, when someone died God ended all hope for that individual in regards to the possibility of becoming saved. Their physical death sealed their eternal fate. Anyone that died righteous (i.e. saved) would be righteous still after death; and anyone that died filthy (unsaved or in their sins) would be filthy still after death. Did God have a right to do that to people? Did He have a right to make a determination that upon the point of their physical death there would be no more hope of salvation for them?
Of course He had the right to do that. But even then, some did not like God to exercise His sovereign right to make final determinations like that, so they devised a doctrine called purgatory wherein there was still some hope for sinners that had physically died. All you had to do was to make some special gift offerings to the Catholic church known as indulgences and add some special prayers and the condemned sinner in purgatory could have their time of torment in that 'in between state' lessened. This doctrine offered hope for the physically dead. The door of heaven was not quite shut on them. There was still the possibility of entering into heaven one day, as long as their loved ones kept making generous gifts to the church.
Yet the doctrine of purgatory was all a big lie. Physical death did indeed seal man's eternal fate. Yes, even in the time when God was saving the souls of certain ones (His elect) there was a time limit placed on each human being regarding the possibility of each one becoming saved. According to the appropriate time and season, each man, each woman, had the potential of being saved up UNTIL the end of their physical life. For the most part those that understand or are well acquainted with the Bible do not argue with God's right to set that particular time limit (of physical death) on each person in the world. They recognize God's right to take man in death as He so wills. Which means they also recognize God's right to remove the possibility of salvation from the lives of billions of people (as billions of people have lived and died throughout the history of the world)---just as long as He does so one at a time.
And yet, amazingly, when God makes a decree to bring the world into the condition of spiritual death, as He did by shutting he door of heaven on May 21, 2011, many of the very same people rise up and exclaim, "Not fair!". God wouldn't do that. Etc, etc, etc. When the truth is that God is sovereign God and has the right to determine the eternal fate of any individual either by taking their physical life in death on a one by one basis; or by shutting the door of heaven and and thereby fixing and establishing the eternal fate of all mankind presently upon the face of the earth. Whether one or a billion the same principle of sovereignty is in view.
Ecclesiastes 8:8 There is no man that hath power over the spirit to retain the spirit; neither hath he power in the day of death:
Revelation 22:11 He that is unjust, let him be unjust still: and he which is filthy, let him be filthy still: and he that is righteous, let him be righteous still: and he that is holy, let him be holy still.