ONCE  THE KARMA ARE CLEARED WITH THE EXISTING SET OF SOULS,THE PERSON  LEAVES THE BODY FOR NEXT BIRTH. NO ONE CAN STOP DEATH.   

 NOT EVEN GOD ! 

Yes death is one bitter truth, harsh but real, GOD  has no say in the life and death cycle of  human beings or even animals for that matter. The Almighty doesn't  interfere in birth and death drama at all.  It is our past karma which decides who is going to play what role in our coming lives. It's all about settling the past accounts from previous births. And souls can only interact  with other souls through a body. Therefore  death is nothing big but changing one costume to another and moving forward as the soul is on a journey.