So begins the saga of Abram, the next big-hitter name in this book of all books. God tells Abram to “get thee out of thy country, and from thy kindred, and from thy father’s house, unto a land that I will show thee” (12:1). This three-fold separation of Abram rhetorically singles him out for greatness as the chosen one, a parallel to Noah. Abram ‘hero’s journey’ is as old as storytelling itself, so we also know, at best, he will struggle greatly; at worst, it won’t end well.
So Seth, Eve’s son who essentially replaced Abel, seems to be the true inheritor of Adam’s legacy. Seth is first described as “in his [Adam’s] own likeness, in his image.” This, of course, parallels Adam’s relationship to God, making Seth the most God-like of Adam’s sons. This cyclical relationship—and the whole chapter—reinforces the theme of lineage and paternalism, and that passing on one’s likeness is of critical importance. Otherwise, you break the seemingly-infinite chain that eventually leads back to God. So yeah, it’s not just a cliché: according to the Bible, we are all literally children of God (if you go back far enough).
This chapter includes another classic story: Cain and Abel. Cain’s story not only parallels his own parents’ casting out of Eden, but begins the solidification of God’s teachings, besides “do what I say or else.” At the same time, though, this chapter introduces how God’s teachings could be manipulated to serve one’s own selfish interests—a warning, perhaps.