Genesis 4:24 → Genesis 4:15

Genesis 4:15 records God's protective decree over Cain: "If anyone slays Cain, then Cain will be avenged sevenfold" (sevenfold = שִׁבְעָתַיִם). Genesis 4:24 deliberately escalates this formula when Lamech boasts: "If Cain is avenged sevenfold, then Lamech seventy-sevenfold" (sevenfold = שִׁבְעָתַיִם; seventy-sevenfold = שִׁבְעִים וְשִׁבְעָה). Lamech's song perverts God's gracious protection of Cain into a self-glorifying claim of disproportionate vengeance, transforming divine mercy into human tyranny. The shared term שִׁבְעָתַיִם verbally links the two passages, but the contrast is stark: God set a limit on retribution to protect a murderer, while Lamech removes all limits to glorify his own violence. This escalation within the Cainite line illustrates the trajectory of sin unchecked by repentance.