1. "And Hashem said to Moses, 'Go in to Pharaoh, for I have hardened his heart...'" (Shemot 10:1). Rabbi Yehuda opened the discussion, saying: "Happy are the people that know the joyful note; they shall walk, Hashem, in the light of Your countenance" (Tehilim 89:16). How much should people walk in the ways of the Holy One, blessed be He, and observe the commandments of the Torah in order to merit the World to Come, and that they may be delivered from all Accusers above and below. For as there are Accusers in the world below, so there are Adversaries above whose function is to ACCUSE people.