The family lines in Genesis do more than record history. They use select details and structure to communicate spiritual truths. These genealogies show God's blessings. They confirm the family heritage of key people. They connect the Genesis story by showing family continuity.
Adam's family line through Seth records ten generations to Noah (see 1 Chronicles 1:1–4; Luke 3:36–38). The great flood occurred before another 10 generations from Noah to Abram. The number 10 symbolizes completeness. Examples include the 10 plagues (Exodus 7:8–11:10) and the Ten Commandments (Exodus 20:2–17). Noah ended the pre-flood history, and Abram began a new era.