Prosecutor Leo Wise used witness testimony and Hunter Biden's own words from his memoir and text messages to argue that the president's son "knew exactly what he was doing" when prosecutors say he falsely claimed he was not addicted to drugs in order to purchase a Colt handgun in 2018.

"Take the defendant's word for it," Wise said as he showed the jury excerpts from Hunter Biden's book that described his drug use and addiction.

Wise, showing the jurors a side-by-side comparison of testimony regarding his truck from his daughter Naomi Biden and then-girlfriend Hallie Biden, said their testimony is "circumstantial evidence " that shows "the defendant used crack in the truck" days after purchasing the firearm.

Naomi Biden testified that she returned the truck to her father "clean" on Oct. 19, 2018, and Hallie Biden testified that a few days later she found Hunter Biden's gun in the vehicle along with drug paraphernalia and drug remnants.

Wise also showed the jury a calendar of the month of October 2018 that showed the cash withdrawals made by Hunter Biden. "None of the cash was for rehab," Wise said.

The evidence, Wise told jurors in conclusion, "supports only one verdict."

Hunter Biden's attorney Abbe Lowell then began his closing arguments.

Prosecutor Leo Wise, continuing his closing argument, laid out his case for conviction by telling jurors that the evidence in the case was "ugly" but "necessary" to establish Hunter Biden's drug use during the time in question -- as well as in the months before and after.

"He knew he was using drugs," Wise told the jury, a reference to the standard the jury must reach for conviction -- that Hunter Biden had to "knowingly" lie on the gun-purchase form on which he said he was not addicted to drugs.

"That's what the evidence shows," Wise said.

Wise emphasized repeatedly to the jury that the government is not required to show specifically that Hunter used drugs when he owned the gun from the Oct. 12-23, 2018 -- but rather they must "establish that pattern."

To that end, Wise referenced the text messages spanning back to 2015 in which Hunter Biden appeared to purchase drugs or reference his addiction, as well as the testimony from his ex-wife Kathleen Buhle and ex-girlfriend Hallie Biden, who said they either found his drug paraphernalia, saw him use drugs, or talked to him about it.

Wise also pointed to the testimony of ex-girlfriend Zoe Kestan, who testified she saw Hunter Biden using drugs in late September 2018 -- just two weeks before he bought the gun.

"You can convict on that alone," Wise told the jury.

Wise also referenced Hunter Biden's memoir, "Beautiful Things," saying it was a "searingly painful" but "honest" description of himself and his addiction.

The evidence showed Hunter Biden "habitually used," Wise said.

Prosecutor Leo Wise began his closing argument by referencing the many Biden family members packed into the courtroom galley today.

"All of this is not evidence," Wise said to the jury as he gestured toward the gallery where First lady Jill Biden and other members of the Biden family are jammed into the front three rows.

"You may recognize them from the news, from the community," Wise told them. "None of that matters."

Wise then reiterated the government's opening remarks that no one is above the law, telling the jury that the case is no different from others -- regardless "of who the defendant is."

Hunter Biden came to court today with what appears to be the largest number of friends and family members yet to appear at his trial.

The first row of the gallery was so packed with members of the Biden family this morning that the security guard on the end nearly fell off. The entire first three rows and some of the fourth row were filled with friends and family members -- about 25 in total.

First Lady Jill Biden, her daughter Ashley Biden, and Hunter Biden's wife Melissa Cohen Biden sat together in the front row, with Ashley Biden at one point comforting the others by putting her arm around her mother and then patting Melissa Biden's back.

Through the morning's lengthy sidebars and delays, Hunter Biden repeatedly engaged with them, chatting with them and exchanging hugs when he could.

When the defense rested its case, he stood up and hugged his uncle James Biden in the front row and appeared to say, "Love you."

After another break, he returned to the courtroom holding the first lady's hand.

Family members returned to the courtroom after the lunch break for closing arguments.

Attorneys for Hunter Biden, in their cross-examination of FBI Special Agent Erika Jensen, attempted to push back on prosecutors' contention that Hunter Biden was abusing drugs at the time he said on a gun-purchase form that he was drug-free.

A key piece of evidence comes from Hunter Biden's 2021 memoir, in which he described his "relapse" just weeks after leaving rehab in August -- just six weeks before purchasing the firearm.

"I stayed clean for two weeks then relapsed," Hunter Biden wrote in his book.

Defense attorney Abbe Lowell, on cross-examination, questioned the assumption that Hunter Biden's relapse implied that he was referring to his drug use -- suggesting instead that he was referring to his alcohol addiction.

"When he was referring to that in his book, was he talking about relapsing to drugs and alcohol, or do you know what he meant?" Lowell asked.

"I can only state what was stated," Jensen said.

"Which is, 'Then I relapsed?'" Lowell asked.

"Just what it says, 'I relapsed,'" Jensen replied.

Jensen also acknowledged that she could not verify that Hunter Biden was continuously using drugs from 2015 to 2019, saying, "My recollection is that there are excerpts where he was principally occupied with smoking crack cocaine. I didn't get the sense that it was the entire history."

"Meaning that there were periods of time that he was not?" Lowell asked.

"I think there -- including the period in August where we have some invoices for rehab, that there were periods where there was not," Jensen said.

It was an important moment for the defense, as Lowell managed to establish that Hunter Biden's use of drugs was not consistent -- cuing up his argument that the president's son was not on drugs at the time of his firearm purchase.

Prosecutors also entered into evidence records related to enormous cash withdrawals Hunter Biden made -- more than $150,000 from September through November of 2018, including a $5,000 withdrawal on the day he purchased the gun. Prosecutors suggested this cash was used to procure drugs; Lowell, on cross-examination, established that Hunter Biden paid $900 in cash for the weapon and accessories.

Court was subsequently recessed for the day, with Lowell's cross-examination of Jensen scheduled to resume Wednesday morning.

Prosecutors suggested that Hallie Biden would be the next witness after Jensen, making it likely that the first Biden family member to testify will take the stand at some point tomorrow.