Deuteronomy 22:21

21 then they shall bring the young woman out to the entrance of her father's house and the men of her town shall stone her to death, because she committed a disgraceful act in Israel by prostituting herself in her father's house. So you shall purge the evil from your midst.

Deuteronomy 22:21 Meaning and Commentary

Deuteronomy 22:21

Then they shall bring out the damsel to the door of her
father's house
For his greater disgrace, and as a sort of punishment for his neglect of her education, not taking care to instruct her, and bring her up in a better manner:

and the men of her city shall stone her with stones, that she die;
which was the death this sort of adulteresses were put to; others was by strangling, and the daughter of a priest was to be burnt; see ( Leviticus 20:10 ) ( 21:9 ) , which shows that this sin was committed by her after her espousals, as Jarchi and Aben Ezra note; or otherwise it would have been only simple fornication, which was not punishable with death:

because she hath wrought folly in Israel:
a sin, as all sin is folly, and especially any notorious one, as this was; and which is aggravated by its being done in Israel, among a people professing the true religion, and whom God had chosen and separated from all others to be a holy people to himself:

to play the whore in her father's house;
where she continued after her espousals, until she was taken to the house of her husband, to consummate the: marriage; and between the one and the other was this sin committed, and which is another reason for her execution at the door of her father's house:

so shalt thou put evil away from among you;
deter others from it by such an example, and remove the guilt of it from them, which otherwise would lie upon them, if punishment was not inflicted; the Targum of Jonathan interprets it of the putting away of her that did the evil.

Deuteronomy 22:21 In-Context

19 they shall fine him one hundred shekels of silver (which they shall give to the young woman's father) because he has slandered a virgin of Israel. She shall remain his wife; he shall not be permitted to divorce her as long as he lives.
20 If, however, this charge is true, that evidence of the young woman's virginity was not found,
21 then they shall bring the young woman out to the entrance of her father's house and the men of her town shall stone her to death, because she committed a disgraceful act in Israel by prostituting herself in her father's house. So you shall purge the evil from your midst.
22 If a man is caught lying with the wife of another man, both of them shall die, the man who lay with the woman as well as the woman. So you shall purge the evil from Israel.
23 If there is a young woman, a virgin already engaged to be married, and a man meets her in the town and lies with her,
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.