I rather appreciate Joseph Blenkinsopp, having first encountered him as author of The Pentateuch: An Introduction to the First Five Books of the Bible and later as the author of an extensive Isaiah translation and commentary. He's now shown up in the current volume of the Journal of Biblical Literature in an article titled "Abraham as Paradigm in the Priestly History in Genesis" where he argues that ...A number of supportive arguments are offered for consideration including:The force of these arguments are cumulative in effect. But when read through the lens of Blenkinsopp's position, the tale of our "resident alien" patriarch seems to take on a new and refreshing clarity.
... the story of Abraham, as an important segment of the Priestly History in the Hexateuch (Genesis to Joshua), was composed with the purpose of providing those who survived the disaster of 586 B.C.E. with a religious basis on which they could rebuild their lives. More specifically, the component of the History dealing with Abraham was intended to provide a paradigm or model for those who aspired to return, or actually did return, to Judah once this became possible after the fall of the Babylonian empire in 593 M.C.E.
- locating the title "the God of heaven" (Gen. 24:3,7) in the Persian Period,
- pointing to the frequent use of the name 'Shaddai' which, according to Blenkinsopp, is "most frequently attested" in the same period,
- noting the application/extension of the covenant to Ismael, curious when placed in the time of the Patriarchs but a politically astute nicety at a time marked by the ascendancy of the Kedarite confederacy, and
- further noting that the introduction of circumcision on the 8th day seems curiously anachronistic when placed prior to the explication of ritual law in Leviticus.
A date for the P History in the later Neo-Babylonian or early Persian period, as proposed earlier, would permit the suggestion that in this incident Abraham is being proposed as a model for immigrants from the Babylonian Diaspora in their relations with the indigenous peoples, and this with special reference to the crucial issue of the acquisition or recovery of land.