This substantial contribution to Pentateuch research shows paradigmatically how the politico-geographical concepts from Genesis 14 and the concepts of the theology of promise in Gen 15 are taken up and specifically re-formed in Gen 17 and the final editorial layer. The hypothesisthat Genesis is a basic priestly document is challenged, and instead, Genesis 17 is acknowledged as the keystone which was created specially for the final compositional systematisation of Genesis as an immediate prelude to the publication of the Torah (approx. 400 BC) and left a lasting mark on the Biblical image of Abraham.