The role of reckoning in remembering Resurrection
Generally human has three dimensions: 1) beliefs, 2) characteristics, and behavior 3) actins, first we believe in something, then our behavior is formed and at last we perform the actions based on our characteristics and behavior. Therefore if man believes he is responsible for whatever he does and that all his actions will accompany him and will be definitely presented to God, and then he believes in Resurrection and Divine justice.
1- So do not let anyone who does not believe in it and follows his own passion bar your from it so that you parish!(20:16)
2- Those who stray from Gods path will have severe torment because they have forgotten the Day of Reckoning! (38:26)
3-they consider it is for away while we see it as nearby (70:6-7)
The elect (great men) who are afraid of the Hell, on the Day of Judgement will neither hear the sound of the Hell nor will see the fire.
They will not hear it even as a rustle while they will live forever in what they themselves have been longing for. The greatest dismay will not sadden them while angels will welcome them with. “This is your Day which your have been promised!” (21-102-103)
Sources :
"al-Mizan Koranic Exegesis" (Allameh Tabatabai)
The Quran" (T.B. Irving)