indirect
grows out of · the serpent defeated
The image is startling: the very thing that killed is raised up harmless. Genesis 3:15 promised a bruised heel and a crushed head, and both scenes turn the serpent's power into the place of rescue.
direct
grows out of · spoken in the curse
The first promise of rescue is addressed to the serpent inside the sentence of judgement.
indirect
points forward to · born of a woman
Paul's phrase 'born of a woman, born under the law' quietly picks up Genesis 3:15's promised offspring.
direct
points forward to · the line narrows
The promised offspring of Eve becomes the promised offspring of Abraham; Paul reads that singular 'offspring' as pointing to Christ.