"There are possibly some indications that the Laws of Moses mark an advance on the customs which ruled in the days of the Patriarchs. In view of modern critical contentions that these stories of the Patriarchs are a sort of reflection back into the past of what the later writers felt would be appropriate to the time in which they set the eponymous heroes of the old days we may hesitate
to regard such attributed customs as trustworthy for a comparison. Nor is it beyond question whether the Israelites ever obeyed the laws of Bedouin Arabs. But assuming that on their entrance into Canaan the Israelites acquired fresh customs we may make some important reflections. Supposing there was a change in law can we detect it? If we can what exactly does it establish? Have we merely a change due to a change of habitat or have other factors to be taken into account?."