Bios (biological) life is that life that comes to us from nature, the life that is always tending to run down and decay and needs to be nourished constantly with air, water and food.
Spiritual life (Zoe), on the other hand, is the life which is in God from all eternity, which has always existed and will always exist…
The difference between having bios and zoe is like the difference between a statue and a man. A man who changed from having bios to zoe would have gone through as big a change as a statue which changed from being a carved statue to being a real man.
C. S. Lewis