watched. Compare Jeremiah 1:12 (same word).
and. Note the Figure of speech Polysyndeton (App-6).
Related Commentaries of Jeremiah 31:28
Jeremiah 31:28
28 And it shall come to pass, that like as I have watched over them, to pluck up, and to break down, and to throw down, and to destroy, and to afflict; so will I watch over them, to build, and to plant, saith the LORD.