The priestly school (P), which shaped the final form of the entire Pentateuch, considered it important to include this genealogical list here, even though it interrupts the narrative of the period preceding the Exodus. For the priestly school (P), it was crucial to establish a link between Moses, Aaron, and the tribe of Levi, with a focus on Aaron. This was intended to legitimize the social and religious significance of Aaron’s descendants, who historically comprised the priestly group that later led the temple in Jerusalem and its worship. The list quickly moves from Reuben and Simeon to Levi, mainly to highlight the leaders of the Levite families.