Individuals don’t require exoneration in court.

The prosecution, regardless of unethical grandstanding, have a duty to prove the case without any resaonable doubt. They hold the burden of proof.

I would, of course, agree with them as physical evidence isn’t necessarily a requirement to prove a case beyond a reasonable doubt. But I would certainly draw my own inference from their mendacity if they used those words.

Your duty as a juror is to make a determination of fact and apply the law as guided by the judge to reach a verdict. When the prosecutor gives you some blabber approaching instructions, that’s an attempt to influence you.