How does the Davidic covenant relate to the Abrahamic covenant?
The Davidic covenant is encompassed by the Abrahamic covenant. Every covenant God made with Israel, including the Davidic covenant in 2 Samuel 7, falls within the bounds of the Abrahamic covenant. It does not stand apart but operates inside that earlier covenant framework.
Les explains that the covenants are surrounded by the Abrahamic covenant, and every covenant God made with Israel is within its bounds. He points to 2 Samuel 7 as the Davidic covenant, where God deals with David and his royal line through Solomon, Nathan, and the genealogy leading to Joseph and Mary. Even when the line seemed nearly broken during the Babylonian captivity, God preserved it until Christ was born.