en_tn_condensed/psa/049/010.md

he will see decay

The writer speaks of experiencing something as if it were seeing that thing. Alternate translation: "he will die and his body will decay" (See: rc://en/ta/man/translate/figs-metaphor)

Wise men die; the fool and the brute alike perish

The author refers to all people by referring to those who have the most and least wisdom. (See: rc://en/ta/man/translate/figs-merism)

brute

This means a person who is stupid or unintelligent.