The major problem of modern people is the forgetfulness of the resurrection day.
The divine prophets and apostles used to regulate their lives, deeds, ethics and behavior based the remembrance of the resurrection day.
This attention and lack of forgetfulness of the Day of Reckoning on one hand prevents the human beings from committing sins and iniquities and on the other hand, the spirit of piety and Deism are strengthened in them.
the more our sins are the bigger our disobedience will be, The warning is to remind us that how much our attention about the day of resurrection has faded out and how our beliefs in the resurrection day have been weakened and have become flimsy.
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source : erfan.ir