It's a big chiasm, and it's all centred around v6. It's the big, big thing. This is also the conclusion of the sermon (While 30:15 to the end of the chapter is the conclusion to the book)
Verses 11-14 are actually happening not on the day Moses is speaking this sermon, but happens when Yhwh circumcises their hearts.
In that time, the word will be in our mouths, and close to us. This helps make much greater sense of the passage.