A connection between these two Parshiyos, and the Yom Tov of Shavuos. The connection Chazal make between the development of Bitachon that Klal Yisrael developed through eating of the Manna, and their ability to be the generation to recieve the Torah. Idea is in Ahavah Rabah as well, "because our forefathers trusted in you, you taught them the ways of life."
