"This is all ridiculous," Trump told reporters on his way into the courtroom, regarding the trial.

"The numbers are much greater than on the financial statement," he said of the New York attorney general's accusation that he overvalued his properties on this statements of financial condition, before going on to call New York AG Letitia James, who is Black, a racist who has "made some terrible statements."

"The people call Donald J. Trump," state attorney Kevin Wallace said.

With that, Donald Trump rose from his seat, made the short walk from the counsel table to the witness stand, and took a seat.

To his immediate right sits Judge Arthur Engoron and his clerk Allison Greenfield, who Trump has repeatedly criticized as biased. Directly across from him and in eyeshot is New York Attorney General Letitia James, who sits in the courtroom's gallery with her eyes fixed on the former president.

Trump, wearing a tailored navy blue suit, blue dress shirt, and blue tie, sits slightly slouched in the witness box.

"Please raise your right hand," a court officer advised Trump. "Do you solemnly swear or affirm that any testimony you give will be the truth, the whole truth and nothing but the truth?"

"I do," Trump said with his hand raised.

New York Attorney General Letitia James briefly conferred with her team of lawyers in court this morning before taking her seat in the gallery.

Before entering the courtroom, James predicted that Trump will likely engage in "name calling, taunts, [and] race baiting" to distract from his testimony.

"Before he takes the stand, I am certain that he will engage in name calling, taunts, race baiting, and call this a witch hunt," James told reporters. "But at the end of the day, the only thing that matters are the facts and the numbers, and numbers, my friends, don't lie."

Senior Enforcement Counsel Kevin Wallace of the New York attorney general's office will lead the direct examination of Donald Trump when the former president takes the stand this morning.

Wallace led the depositions of Trump during the New York attorney general's investigation and also delivered the state's opening statement in the trial.

"The defendants were lying year after year," Wallace said in his opening statement.

A constant presence in court during the trial, Wallace joined the New York AG's office in 2018 after working in the private sector for 15 years.

Wallace and Trump sparred for hours during Trump's April deposition, according to a transcript of the deposition that was subsequently released by the AG's office.

"We're going to be here until midnight if your client answers every question with an eight-minute speech," Wallace remarked after one of Trump's lengthier answers.

Wallace tried to press Trump on spreadsheets that Wallace displayed during the deposition, promoting frequent objections from Trump's lawyers.

"Oh my God -- are you people capable of reading a spreadsheet?" an exasperated Wallace said after one objection from Trump's attorney Chris Kise.

Former President Donald Trump's plan to deliver part of his closing argument Thursday, as reported yesterday by ABC News, is now in doubt after he failed to meet a deadline to agree to limitations imposed by Judge Arthur Engoron.

According an email exchange between Engonon and defense counsel that was posted to the public docket Wednesday, Engoron said that Trump would have to follow the case's limited gag order, and that he would not be allowed to "impugn" the New York attorney general or her staff -- limitations that Trump attorney Chris Kise rejected, calling them "untenable."

"The limitations I am imposing, in my absolute discretion, are not subject to further debate. Take it or leave it," Engoron replied on Jan. 9, according to the email thread.

When Trump's lawyers missed the first deadline set by Engoron, the judge determined that Trump could not testify. Kise then responded that he did not see the deadline and requested that the closing arguments be postponed because of the death of Melania Trump's mother on Tuesday.

"I am sad to advise the Court that Mrs. Trump's mother passed away this evening. Because of the challenges presented by this deeply personal family matter, President Trump has asked that I request the Court postpone the date for closing argument," Kise wrote yesterday.

Engoron promptly denied the request and said the closings would continue as planned.

"On balance, going forward makes the most sense. Please tell Mr. Trump that I am sorry," Engoron wrote.

Kise informed Engoron that Trump still planned to attend the closings and speak.

"Despite the fact that his Mother-in Law, who he was very close to, passed away late last night, President Trump will be speaking tomorrow," Kise said in an email this morning.

When Engoron asked for assurance that Trump agreed to his rules, Kise pushed back, writing, "You are not allowing President Trump, who has been wrongfully demeaned and belittled by an out of control, politically motivated Attorney General, to speak about the things that must be spoken about."

"I won't debate this yet again. Take it or leave it. Now or never. You have until noon, seven minutes from now. I WILL NOT GRANT ANY FURTHER EXTENSIONS," Engoron replied at 11:54 a.m.

After Kise failed to respond, Engoron emailed him at 12:12 p.m. that he assumed Trump would not be speaking and that their email exchange would be posted to the court's public docket.

Responding to the development, Trump's legal spokesperson, Alina Habba, said in a statement to ABC News: "Is anyone surprised anymore?"