words of the wise. See the Structure of the whole book (p. 864). Referring to the wise men by whom Solomon was surrounded, such as Ethan, Heman, Chalcol, and Darda, the sons of Mahol (1 Kings 4:31).
thine. Note the continuation of the second person, "the words of the wise" being addressed to Solomon.
heart. Put by Figure of speech Metonymy (of Subject), App-6, for thoughts and powers.
my. Note the writer's personality as being other than Solomon.
knowledge. teaching.