Sefer HaSichos 5751 vol. 1 page 398 ff.
Class One. Introduction to פרשת בשלח and actually leaving מצרים. The birth of the Jewish nation in both components: 1) the perfect “one”. The example of Iyov and his tests, Avrohom passed them all. 2) and the Nation of Israel. Moshe is raised in the palace but the Jews are (still) his brothers. The Jewish people must act as a nation.
Class Two. Inside, traveling with Hashem in the מדבר going quick but not too quick. It takes longer than planned.