Freedom from an abusive husband, and here he appeals to Exodus 21:10-11 and 21:26-27, two texts Luck thinks are ignored by Christians; they deal with concubines and he infers from the lesser to the greater (if true with a concubine, surely true for a wife):
21:10 If he takes another wife, he must not diminish the first one’s food, her clothing, or her marital rights. 21:11 If he does not provide her with these three things, then she will go out free, without paying money.
21:26 “If a man strikes the eye of his male servant or his female servant so that he destroys it, he will let the servant go free as compensation for the eye. 21:27 If he knocks out the tooth of his male servant or his female servant, he will let the servant go free as compensation for the tooth.
He draws three conclusions: (1) when the husbands fails to provide, his claims are nullified; (2) legal release is the legal right of the offended partner; (3) the released partner is free to remarry. “Set free” is clear in Exodus 21.