The author is saying that Eden is made up of raw materials. It’s spilling over with pent-up potentiality. Everything you need to make a civilization is there; all you have to do is to cultivate it, to draw it out. But that’s going to take some work. I love Tim Keller’s definition of work. He puts it this way: work is “rearranging the raw material of God’s creation in such a way that it helps the world in general, and people in particular, thrive and flourish.”