This book, emphasizing Genesis 14 and Psalm 110, contributes to the history of composition of the patriarchal narratives in the book of Genesis and to the history of theology of the Second Temple period.
Genesis 14 was added on a late stage and in two steps: first, Genesis 14* and later, the so-called Melchizedek episode (ME, vv. 18-20). Genesis 14 is the result of inner-biblical exegesis: both Genesis 14* and the later ME originated from scribal activity in which several earlier biblical texts have served as templates/literary building blocks.
As for Genesis 14*, in particular...