en_tn/rom/03/27.md

Paul answers rhetorical questions to emphasize that each point he is making is certainly true. (See: rc://en/ta/man/translate/figs-rquestion)

On what grounds?

"For what reason?" or "Why is boasting excluded?" or "Why can we not boast?"

Of works?

"Is boasting excluded because we obey the law?"

on the grounds of faith

"because we believe in Jesus"

without

"apart from"