That day will be the beginning of the life that will never end, and that Day, every person will be rewarded by God according to his good and evil deeds. The explanation that the Quran gives about the necessity of life after death is what the moral consciousness of man demands it. Actually, if there is no life after death, the very belief in God becomes irrelevant, or, even if one believes in God, that would be an unjust and indifferent God. He would have been a God who once created man, only to be unconcerned with his fate thereafter. Surely, God is just.
He will punish the tyrants whose crimes are beyond count: having killed hundreds of innocent persons, created great corruption in the society, enslaved numerous persons to serve their whims, and so forth. Man, having a very short span of life in this world, and this physical world also not being eternal, the punishments or rewards equal to the evil or noble deeds of persons are not possible here. The Quran very emphatically states that the Day of Judgment must come and God will decide about the fate of each soul according to his or her record of deeds: Those who disbelieve say: The Hour will never come unto us. Say: Nay, by my Lord, but it is coming unto you surely. (He is) the Knower of the Unseen. Not an atom’s weight, or less than that or greater, escapes Him in the heavens or in the earth, but it is in a clear Record. That He may reward those who believe and do good works. For them is pardon and a rich provision. But those who strive against our revelations, challenging (Us), theirs will be a painful doom of wrath. ” (Quran 34:3-5) The Day of Resurrection will be the Day when God’s attributes of Justice and Mercy will be in full manifestation.
God will shower His mercy on those who suffered for His sake in their worldly life, believing that an eternal bliss was awaiting them. But those who abused the bounties of God, caring nothing for the life to come, will be in the most miserable state. Drawing a comparison between them the Quran says: “Is he, then, to whom we have promised a goodly promise the fulfillment of which he will meet, like the one whom We have provided with the good things of this life, and then on the Day of Resurrection he will be of those who will be brought arraigned before God? ” (Quran 28:61