en_tn/pro/05/01.md

My son ... my wisdom ... my understanding

That is the son, the wisdom, and the understanding of the wise person who started teaching in chapter 1.

My son

The son is the student of the wise person who is teaching. AT: "my child" or "my student"

pay attention to my wisdom; listen carefully to my understanding

These two phrases repeat the same idea to make the student pay attention. (See: rc://en/ta/man/translate/figs-parallelism)

discretion

The quality of being careful with regard to one's actions and speech (see how you translated this in Proverbs 1:4).

your lips

AT: "you" (See: rc://en/ta/man/translate/figs-synecdoche)

may protect knowledge

AT: "will say the right thing"