Genesis 4:1–26
Genesis 4 is the fall enacted. Cain inherits Adam's vocation, is warned in the exact construction Eve was warned with, exiled eastward as Adam was exiled, and fails the shamar charge by killing the brother he was meant to keep. Yet within the same chapter the seed-line continues: Eve names Seth zera acher — another seed — and men begin to call on the name of Yahweh.
Genesis 3:1–24
Gen 3 inverts every gift of Gen 2. The wisdom-word turns weaponized, the first command becomes the first lie by one negative particle, the man who was charged to guard the garden is replaced by cherubim guarding the way back — and in the middle of the judgment, a promise: the woman's seed will crush the serpent's head.