Judge Maryellen Noreika, in her initial instructions to jurors, explained how they are to apply the law to the facts of the case for the three criminal counts Hunter Biden faces.

"You must not attach any significance to the fact that the defendant did not testify," she read aloud in the courtroom, after the defense decided not to call Hunter Biden to the stand.

The judge defined "knowingly," the central term by which jurors must determine if Hunter Biden bought the gun at the center of the case "knowing" he was an addict or user of drugs, after he stated on the gun-purchase form that he was not.

Closing arguments are scheduled to begin at 12:05 p.m. ET, after which the judge will give the jury her final instructions and their deliberations will begin.

Closing arguments will begin at about noon ET after Hunter Biden chose not to testify in his federal gun case.

The defense rested without him taking the stand, after which prosecutors presented a brief rebuttal case, then the judge gave the jury their initial instructions.

Following the prosecution's rebuttal case, the judge read the jury their initial instructions.

Court is then expected to break for lunch, with closing arguments currently scheduled for the afternoon.

The judge will then give the jury their final instructions before they begin deliberations.

The government rested its rebuttal case after a brief cross-examination of FBI special agent Erika Jensen, who testified about location and text message data relevant to the case.

Attorneys then gathered for another sidebar conference.

A jury of six men and six women is scheduled to hear opening statements Tuesday in Hunter Biden's federal gun trial.

An additional four women were chosen as the alternate jurors.

The jurors include a Secret Service retiree, a man whose father was killed by a gun, and a number of jurors whose family and friends have suffered from addiction -- a central theme in the case against Hunter Biden.

Juror No. 1 is a woman who recently heard about Hunter Biden's case on the evening news. Said said her sister is also an addict, but is "currently clean."

Juror No. 2 is a woman who worked for the Secret Service for nearly 25 years and is now retired. Her husband was a uniformed officer in Washington, D.C.

Juror No. 3 is woman who gets her news from YouTube. When asked what she has heard about the case, she said that it involves guns and drugs.

Juror No. 4 is a woman who said she feels people who smoke weed "should not be allowed" to own a gun, but said she could set that aside.

Juror No. 5 is a currently unemployed man who previously received a DUI for which he pleaded guilty.

Juror No. 6 is a man who said he previously knew about the case. He currently owns three pistols and said, "I believe the Second Amendment is very important."

Juror No. 7 is a man whose father owned a firearm. He said he knows "some" gun laws.

Juror No. 8 is a man whose father was killed by a gun in 2004. He has a brother who was arrested for drug possession and was sentenced to prison.

Juror No. 9 is a woman whose home was burglarized years ago. She purchased a gun and has had it for over 20 years.

Juror No. 10 is a man whose brother and brother-in-law both suffered from alcoholism and are now both deceased. His niece and nephew both own guns.

Juror No. 11 is a woman whose family hunts and has hunting rifles. She said her "childhood best friend" passed away from a drug overdose.

Juror No. 12 is a man whose older brother is an addict who has been to rehab multiple times for PCP and heroin. He said the brother had a gun but he was not sure when.