George Zimmerman Won't Testify

Defense rests its case after the defendant revealed his decision not to testify.
4:01 | 07/11/13

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Transcript for George Zimmerman Won't Testify
Thanks so much. We appreciate it, sam. Now, to the trial of george zimmerman. The judge talking directly to george zimmerman before the defense rested. The case could be in the hands of the jury as early as tomorrow. Abc's matt gutman is in sanford, florida, with the very latest. Matt, good morning. Reporter: Good morning, amy. That's right. Closing arguments today and likely jury deliberations tomorrow. And that dramatic moment in court yesterday. The judge demanding to know where george zimmerman would testify on his own behalf. It was the most the jury had heard him speak. He declined. It all comes down to this. The defense would rest. Reporter: With testimony now over, jurors will begin hearing closing arguments later today. The final moments in court wednesday, again heated. Judge deborah nelson asking george zimmerman again and again, whether he would take the stand in his own defense. Have you made a decision as to whether or not you want to testify in this case? I object to that question. Your objection is overruled. Reporter: Finally, zimmerman answered. After talking to council, I've decided not to testify, your honor. Reporter: Those words, the most the 29-year-old has spoken during his second-degree murder trial. Zimmerman, who killed trayvon martin in february of 2012, pleading not guilty, saying he fired in self-defense, after martin pinned him to the ground. This is the area of the belly button. Reporter: On wednesday, jurors got to see prosecutors challenge the defense's version of that scuffle. Prosecutor john guy climbing atop a full mannequin, while cross-examinationing law enforcement trainer. Were you aware that he described to his best friend, that when the defendant slid down, that trayvon martin was up around his armpits. Reporter: Jurors and defense attorneys, craned their necks. Some even standing up to see the demonstration. Where would the gun be now? Now, the gun would be behind your left leg. Reporter: Defense attorney mark o'mara cborrowed the dummy on redirect. Would it be consistent with somebody doing this? I don't think so. How about this? Somebody resisting the attempt? Reporter: By tomorrow night, george zimmerman could know whether he faces life in prison or freedom. We're told he's preparing for both, spending a lot of time with his family. If he's convicted on a lesser charge, like aggravated assault, we're told he will be escorted directly from the courthouse to the jail. Matt gutman, thanks so much. Let's bring in abc's chief legal affairs anchor, dan abrams. You have been outspoken that you don't think zimmerman will be charged on murder charges. Are we talking about manslaughter? Aggravated assault? I think the aggravated assault is absolutely crucial. I think the jury will hear the possibility of manslaughter. If they hear the possibility of aggravated assault, the reason it makes the defense nervous, is it provides the jury with a compromise. And, "b," under florida law, he could end up serving more time for aggravated assault, with the use of a firearm, because he had a firearm with him, than would be the case with simply manslaughter. So, a lot of reasons for the defense to be very nervous about that aggravated assault lesser included offense. So much at stake for both sides here. We've seen unbelievable theatrics, dramatics from the judge, from the prosecutor, from the defense attorneys, as well. What do we think we're going to see in closing arguments today? Tensions have been boiling over inside that courtroom. And you saw that in particular yesterday, between the judge and one of the defense attorneys. But I think everyone's going to pull back from that once the closing arguments start. The closing arguments are so crucial for both des, that you're going to see, I think the prosecutor focusing on the human aspect. This didn't need to happen. And the defense focusing on the law, on reasonable doubt. I think those are going to be the two, key things to look for. Dan abrams, all eyes on florida today.

This transcript has been automatically generated and may not be 100% accurate.

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