According to Hebrew history narrated in Exodus , the second book of the Torah , the Hebrews became a nation and adopted a national god on the slopes of Mount Sinai in southern Arabia. While we know nothing whatsoever of Hebrew life in Egypt, the flight from Egypt is described in Hebrew history with immense and powerful detail. It is the point in history that the scattered tribes descended from Abraham become a single unit, a single nation.
Hebrew history is absolutely silent about Hebrew worship during the sojourn in Egypt.
A single religious observance, the observation of Passover, originates in Egypt immediately before the migration. This observance commemorates how Yahweh spared the Hebrews when he destroyed all the first born sons in the land of Egypt. The Yahweh religion itself, however, is learned when the mass of Hebrews collect at Mount Sinai in Midian, which is located in the southern regions of the Arabian peninsula. During this period, called the Sinai pericope , Moses teaches the Hebrews the name of their god and brings to them the laws that the Hebrews, as the chosen people, must observe. The Sinai pericope is a time of legislation and of cultural formation in the Hebrew view of history.