There is no one to tell them about this. Nobody seeks to know the cause of fortune and misfortune, happiness and misery, although these states result from such acts. Brothers, sisters, husbands and wives mourn each other's death. According to the basic law of impermanence, whether death will occur in order of seniority or in the reverse is unpredictable. All things must pass.
Nothing stays forever.
Few believe this, even if someone teaches and exhorts them. They are deluded by their passionate attachments, unaware of the Way, misguided and trapped by anger and enmity, and intent on gaining wealth and gratifying their carnal desires like wolves. In the same family, when one of the parents, children, brothers, sisters, husband or wife dies, those surviving mourn over the loss, and their attachment to the deceased persists. Deep sorrow fills their hearts and, grief-stricken, they mournfully think of the departed. Days pass and years go by, but their distress goes on.