Quote Originally Posted by hullexile:
Levitical law which hasn't applied for 2000 years. If your brother dies without children and you are unmarried then you should marry the widowed sister in law and so maintain the brothers blood line. The only purpose of the levitical marriage was to procreate hence Onan's sin in pulling out. He got the shag without the desired consequence.

As I say from 3 or 4 thousand years ago and stopped applying 2000 years ago. Quite progressive for the time

Anyway digressing.
This belongs in another thread.