Fewer Words Version: When you go to war, and God delivers your enemies into your hands, and you see a beautiful woman among the captives and would like her for a wife, bring her home, and have her shave her head and cut her nails.
After she has spent a month mourning her dead mother and father, have sex with her.
Later, if you don't like her, you can let her go. Deuteronomy 21:10-13
