You shall not mistreat any widow or fatherless child.
Here is, I. A law that he who debauched a young woman should be obliged to marry her, Exo 22:16, Exo 22:17. If she was betrothed to another, it was death to debauch her (Deu 22:23, Deu 22:24); but the law here mentioned respects her as single.
Commenting on Exodus 22:16-24
And my wrath shall wax hot,.... Against those that afflict them, being so devoid of humanity, compassion, and tenderness, and so guilty of oppression and injustice, which are aggravated by the circumstances of the persons they ill treat, and therefore the more provoking to God: and I will kill you with the sword; with the sword of death, says the Targum of Jonathan; it designs...
Ye shall not afflict any widow, or fatherless child - It is remarkable that offenses against this law are not left to the discretion of the judges to be punished; God reserves the punishment to himself, and by this he strongly shows his abhorrence of the crime.