The verse about Shelah living 403 years after the birth of Eber and having other sons and daughters is part of the genealogical records in Genesis. These genealogies serve multiple purposes in the biblical narrative. They establish a historical framework that connects different generations, showing the continuity of God's creation and His ongoing relationship with humanity. The long lifespans mentioned in these genealogies reflect a time when life was perceived as abundant and full, symbolizing God's blessing and favor.
The mention of Shelah's other sons and daughters emphasizes the growth and expansion of families, which was crucial for the survival and prosperity of early communities. This focus on family lineage also sets the stage for the unfolding story of God's covenant with His people, as these genealogies eventually lead to the birth of significant biblical figures. In a broader sense, this passage invites reflection on the importance of heritage, the blessings of family, and the ways in which God’s promises are fulfilled across generations.