en_tn/deu/13/08.md

You must not give in to him

"Do not agree to what he wants"

you must not permit your eye to pity him

Here "your eye" refers to the whole person. Alternate translation: "you msut not look at him with pity" or "you must not show him mercy" (See: rc://en/ta/man/jit/figs-synecdoche)

you must not spare him or conceal him

"you must not show him mercy or hide from others what he has done"