en_tn/isa/29/21.md

who by a word make a man out to be an offender

This refers to giving testimony in court against someone. Alternate translation: "who testify against a man and make him out to be an offender" or "who say in court that an innocent man is guilty of doing something wrong" (See: rc://en/ta/man/jit/figs-explicit)

They lay a snare for him who seeks justice at the gate and put the righteous down with empty lies

The evil people doing anything they can to stop a good person is spoken of as if the evil people set a trap like a hunter catching his prey. Alternate translation: "They lie and try to stop those who want to do what is fair and right" (See: rc://en/ta/man/jit/figs-metaphor)

who seeks justice at the gate

The city gate was often the place where the city leaders made official decisions.