Until now, Moshe has mostly served as G-d's messenger to Pharaoh. With Bo, for the first time, Moshe steps into what will become his primary role as G-d's messenger to the Jewish people. In Parsha Bo, Moshe is given a number of commandments, Rosh Chodesh, the celebration of the new month which makes it possible to celebrate the cycle of holidays, Passover, the commemoration of the coming exodus, the dedication of the first born, in counterpoint to the death of the Egyptian first born, and even a reference to Tefillin.   At the start of Parsha Bo, G-d reveals that everything that has happened was primarily so that, 'Lema'an Tisapher Beoznei Binecho UBen Binecho", so that the Jews would retell the story to their children and their children's children. Pharaoh and the might of Egypt had been mere object lessons for G-d. The students were the Jews. In announcing the final plague that will strike down the firstborn, we are told that G-d will execute judgement on all