The story of the blasphemer raises numerous questions: why does the Torah place this story within the chapters dealing with laws and commandments? Why does this story include seemingly irrelevant laws of damages? The snwer to these questions can be learned through the Torah's emphasis on the blasphemer being 'the son of an Egyptian man', and the unique sanctity of Israel. 

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion