While I was listening to The Book of Genesis – The Chalcedon Podcast – Ep. 23, a useful book was mentioned by Martin Selbrede: Implied Law in the Abraham Narrative: A Literary and Theological Analysis by James K. Bruckner. It is quite useful, to show how the Law-Word of God was upheld from Genesis 12 onward.
The prices start at ~$100 used, $245 new. It could be definitely worth it for the right amateur or professional scholar, focusing on God’s authority and law from the era before God wrote the law on stone tables, and handed them to Moses.
Also of note, the podcast is useful for creationists who are interested in God’s Law, as well as theonomists who are interested in creationism.