Good questions. We always have to keep in mind the issues of literalism versus figurativism .. and possible admixtures of the two. We have peoples like the Hindus that will not eat meat, and there is also a natural tension between ranchers and farmers, as witnessed by the range wars of the American West in the 1800's.
And, we must keep in mind that I am not an oracle, though it is hard to believe.
Richard states that because Yahweh at the last minute allowed Abram to sacrifice an animal rather than his son Isaac to him, "then we can infer that Yahweh, or whomever was actually in charge, previously approved and also allowed this practice to occur for generations". If this supposition is true, could this human sacrifice to Yahweh have started all the way back with farmer Cain "sacrificing" shepherd Abel to him as a human blood sacrifice, as "the Lord" had rejected his first sacrifice of the fruits of his land. Tupper Saussy, in "Rulers of Evil", seems to imply this very idea.
This may be a sly Biblical introduction into the field of dialectics, and perhaps even victimology. The OT and NT like to employ the paradigm of the Good Shepherd, but it is clear in this sense that the shepherding is that of human sheep. This was not new as the symbology is explicitly employed with the pharaonic crook and flail, later the crook/crozier adopted by the papacy.
The crook and flail implies two different flocks, sheep and cattle. Women (and explicit slaves) until very recently were accorded as cattle -- i.e. chattel. As I posted about a video recently, as late as the early 19th century common people of England resorted to an (il)legal ruse of actioning off of their wives in lieu of obtaining a very expensive legal divorce (that had to be approved by Parliament). If you can sell your cow, then you can sell your wife, right?
Dialectics and victimology is also related to narrative inversion and contextual 'spin'.
Imagine the migrational dislocations that necessarily occurred with natural cataclysm (earthquakes, floods, fires) surrounding the collapse of the IVC, yet is also accounted with the incursion of northern peoples associated with Indra. This is yet thousands of years later that the massive cosmic event that triggered the anomalous Holocene interglacial we're still in. The embedded cultural practices stemming from massive trauma, like an induced mass PTSD, continue to haunt us. With Religion facilitating the cultural longevity via dealing with issues of sacrifice to the gods, to appease them from assaulting us yet again. This is why people were thrown into volcanoes.
At some point, such sacrifice becomes to ensure the fertility of humans and crops. But as well, such as Yahweh must be appeased to ensure that he doesn't wield his iron rod of punishment, either upon the heathens or upon backsliding Hebrews. But when does appeasement become a cover story for underlying geopolitics of the day? For instance, if pharaoh (or Cyrus) is what is implied by 'Yahweh'? Especially if Yahweh employs such as the Egyptians or the Assyrians as his iron rod.
There is evidence that the peoples of Canaan / Phoenicia / Carthage did employ child sacrifice to Ba'al and Molech, but exactly to what extent is not certain. It was supposed to the firstborn of the king (and/or other elites), but it may have involved substitutes as well (as was said for Jesus in the Quran).
Also notice that the Lord does not kill nor order Cain to be killed for what he did, but instead gives him a special "mark", which Saussy seems to think was the "powers and insignia of kingship", which made him more powerful than the common people. So is this where it (perhaps symbolically) all starts, with Cain being the first "Ruler of Evil", Emperor, Pope, etc., again, in Saussy's words, "the prototypical CAESAR"? Human sacrifice is stopped by Yahweh, however, in the special case of Abram not having to sacrifice his son Isaac, as "this is just a test", and the Chosen Dynasty must continue.
Such selective morality regarding the punishment for the murder of Abel is what should give people pause in what the Bible is really all about, that it is much more than making one feel good spiritually. Instead it should give everyone the creeps. And here there is plenty of evidence that such is indeed interpreted on multiple levels, even within the various churches. Hence, exoteric versus esoteric interpretations.
There are some who believe that Canaan is a remembrance of Cain, but one must resolve the issue of Canaan and his descendants being accorded as perpetual slaves for father Ham's misdeed. Is such caught up within one of the prior inversions, or both of them (Mosaic and the prior Indian-Persian)? As slaves, the Phoenicians and their massive seafaring trading empire seem od slaves, as do the occupants of the IVC, with their advanced rectilinear cities and rock hewn quays at their seafaring ports.
And say, Thus saith the Lord GOD unto Jerusalem; Thy birth and thy nativity is of the land of Canaan; thy father was an Amorite, and thy mother an Hittite. Ezekiel 16:3 KJV
What exactly is being said here? Is this proof of Abraham's ancestry (paternal Amorite, maternal Hittite), or is Abraham an Amorite and Sarah a Hittite as they are the "parents" of the Chosen People, or is this a broad reference to the Chosen ancestors previously dwelling in lands belonging to the Amorites and Hittites, before winding up in "the land of Canaan"? If so, assuming that Abraham was also a Brahmin and/or a Pharaoh (?), how does India and Egypt fit into this chronology?
Such begs the question of exactly what is an OG Hebrew and Jew, in the context of Semite ethicity versus Aryan (Indo-European). There are many more verses that demonstrate the Hittite vector into the Biblical narrative, and which also otherwise belies the Jewish mythos of pure blood origins, like the heritage of David via Ruth.
The land of Sanliurfa (aka Edessa, aka Ur of the Chaldees (not Ur to the south, but a trading colony of Ur, like New Ur) is the land of the Amorites (later the Aramaians) and Harran is at the bounds of the lands of the Hittites. Abraham leaves Harran with an armed retinue of 318 and arrives in Hebron, accorded as a trading outpost of the Hittites. The Hittites greet him according to his high status, and Abram buys a burial plot there.
Then he goes to Egypt and deceives pharaoh regarding Sarah (meaning princess), as well as play such similar games with Canaanite king Abilimech(?). Abram also helps orchestrate a war against 5 kingdoms. A mere nomadic shepherd?
On page 271 of "Rulers of Evil", Saussy points out that in 1887 Oxford Professor Archibald Sayce equated Cain with Marduk, and Saussy states that Cain was also known as Sargon, by translating variations of the name "Sargon" to mean "King Cain", though this seems like a very big stretch to me. However, as you say, perhaps Richard can provide some clarification on this topic, or give us an entirely different thought on this touchy subject of human sacrifice demanded by the ancient elite, until an important exception was made for Abram/Abraham.
I can't really give much insight here beyond what others have, because I haven't focused much on that era. Just that these changes in ritual customs, and the changes in names, indicate changes in the new social orders. It is stories of elite outsiders taking over and inserting themselves into various cultural narratives as if they were of native stock. They usually come to adopt the indigenous language (e.g. the Normans), but not always (e.g. the Americas and Australia).
It appears as though the "Table of Nations", at Genesis 10:15-16, may endorse the "Out of Africa" theory as the ancestors of "Jerusalem", as Heth (ancestor of the Hittites) and the Amorite are stated to be the descendants of Canaan, the son of Ham, who was allotted Africa by his father Noah.
One has to ask what is meant by 'Africa' and what the actual time period being referred to is. The ancient Egyptians are not today the same as the Arabs that occupy Egypt. Who were the peoples that lived under the sand dunes of today's Sahara Desert? Why were so many ancient global people besides the builders of the great pyamids of Giza focused on Orion and its belt stars?