As most of you know I am doing a journey through the Book of Beginnings as my current sermon series. As I have studied Genesis one of the blessings has been to more fully understand the promises made to Abraham and how they are fulfilled in history and ultimately in Jesus! There are many discussions about these promises and how they are to be fulfilled and in several of my sermons I included a chart that shows what types of promises were made to Abraham and how they are fulfilled. You can access it at the link below and there you will also find a Chiastic Outline from David Dorsey that show the focus in Genesis on the Promise of a Son to Abraham who would come to save His people from their sins!
I hope these are helpful and feel free to leave any comments you might have.