“You shall not wrong a sojourner or oppress him, for you were sojourners in the land of Egypt.
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
Ye shall not afflict any widow or fatherless child. Who have no friends, husband, or father to be on their side and protect them, and are weak and helpless to defend themselves, and therefore it must be barbarous to do them any injury, either to their persons or property; no one ought to be afflicted and distressed by another, either in body or mind, or...
Thou shalt neither vex a stranger, nor oppress him - This was not only a very humane law, but it was also the offspring of a sound policy: "Do not vex a stranger; remember ye were strangers. Do not oppress a stranger; remember ye were oppressed.