en_tn/ecc/12/10.md

using vivid ... words

The Teacher wanted the words to be pleasurable to the listener. They bring pleasure because they are well written, not because they are comforting.

The words of wise people ... taught by one shepherd

The writer speaks of the teacher who uses his words to instruct people as if the teacher were a shepherd who uses his tools to lead his flock. (See: rc://en/ta/man/translate/figs-metaphor)