Ezekiel implies that, in his time, marriage between a man and his stepmother, or his daughter-in-law, or his sister, were frequent. This situation seems to be the target of the Deuteronomic version of the incest prohibition, which only addresses roughly the same three issues (though prohibiting the mother-in-law in place of the daughter-in-law). Early rabbinic commentators instead argue that the Deuteronomic list is so short because the other possible liaisons were "obviously" prohibited, and these three were the only liaisons difficult to detect, on account of the fact that, in their day, a man's stepmother, half-sister, and mother-in-law usually lived in the same house as the man (prior to any liaison).