Revere Your Ancestors like Heaven and Earth

The heavenly bond between ancestors and descendants do not end with death. 
This bond endures even after death. 
Ancestral spirits in the spirit realm constantly watch over their descendants on earth, like a mother looking after her child.
Ancestors are  the root of their descendants, and descendants are the fruit of their ancestors. 
And so, if descendants die  during the Autumn Gaebyeok, their ancestors in heaven will die as well.
If descendants survive, their ancestors in heaven will survive.