concern for sexual purity

Deuteronomy 22:13-30
The Marriage violations:
1)A man takes a wife and after lying with her, dislikes her and slanders her and give her a bad name.
   If the girl's father and mother bring proof of her virginity. Elders of the town shall fine him 100 shekels silver. She shall continue to be his wife and he must not divorce her as long as he lives.
  If the charge is true, she shall be brought to the door to her father's house ad there the men of her town shall stone her to death.
2)A man is found sleeping with another man's wife, both the man and who slept with her and the woman must die.
3)A man happens to meet in a town a virgin pledged to be married and he sleeps with her, both of them shell be token to the gate of the that town and stone them to death.
4)A man happens to meet in the country a girl pledged to be married and rapes her out, only the man who has done this shall die.
5)A man happens to meet a virgin who is not pledge to be married and rapes her and they are discovered. He shall pay the girl's father 50 shekel of silver and he must marry the girl, He can never divorce her as long as he lives.
A man is not to marry his father's wife; he must not dishonor his father's bed.
There are rules which encourage attitudes of mutual help and care, and concern for sexual purity.
Why?
Intended violation have to be put to death; it is to purge the evil from among you and Israel.
Those rules are reasonable, and for a woman can not live alone in that environment of Israel. So the law protects her.
Sexual purity is respect the marriage and our body. Our body is dwelling of the Holy spirit.
How?
Pay attention in our marriage. Husband, loves wife, just as Christ loved the church and gave himself her to make her holy. (Ephesians 5:25)