Here’s a sketchy, general structural analysis of Genesis 4.
A. Adam knows Eve, vv 1-2 (Cain born/Abel born//Abel flocks/Cain ground)
B. Cain and Abel, vv 3-16
C. Cain knows wife, v 17-18
B’. Lamech, vv 19-24
A’. Adam knows Eve, vv 25-26
B breaks down as follows:
A. Offerings to Yahweh, vv 3-5 (Cain/Abel//Abel/Cain)
B. Yahweh appears to Cain, vv 6-7 (Yahweh monologue)
C. Cain kills Abel, v 8
B’. Yahweh confronts Cain again, vv 9-15a (Yahweh/Cain/Yahweh/Cain/Yahweh)
A’. Yahweh appoints sign; Cain leaves presence of Yahweh, v 15b-16
Significantly, the story of Cain and Abel uses the name Yahweh eight times.
