en_tn/ecc/07/16.md

self-righteous, wise in your own eyes

These two phrases mean basically the same thing and are combined for emphasis. (See: rc://en/ta/man/translate/figs-parallelism)

Do not be self-righteous

"Do not think that you are more righteous than you actually are"

wise in your own eyes

The eyes represent seeing, and seeing represents thoughts or judgment. Alternate translation: "being wise in your own opinion" or "being wise according to your own judgement" (See: rc://en/ta/man/translate/figs-metaphor)

Why should you destroy yourself?

The writer uses this rhetorical question to emphasize that being self-righteous destroys a person. Alternate translation: "There is no reason to destroy yourself." or "If you think this way you will destroy yourself." (See: rc://en/ta/man/translate/figs-rquestion)