The People of the State of New York v. Donald J. Trump, et al, is scheduled to get underway in lower Manhattan at 10 a.m. with opening statements.

If opening statements are completed before the end of the day, the New York attorney general plans to begin her case by calling Trump's former Mazars USA accountant Donald Bender to the stand.

Mazars severed its business relationship with the former president last year after learning of the attorney general's findings during the AG's probe.

Though Trump has denied all wrongdoing alleged by the attorney general, Judge Arthur Engoron has already decided the central allegation against Trump and his co-defendants, ruling in a pretrial hearing last week that the AG had provided "conclusive evidence" that Trump overvalued his assets between $812 million and $2.2 billion.

The judge then canceled the Trump Organization's business certificates in New York, severely restricting Trump's ability to conduct business in the state moving forward -- a move that Trump attorney Alina Habba called "nonsensical" and "outrageously overreaching."

"In defendants' world: rent regulated apartments are worth the same as unregulated apartments; restricted land is worth the same as unrestricted land; restrictions can evaporate into thin air," Engoron wrote, citing multiple arguments made by defense to justify the allegedly inflated valuations of Trump's assets. "That is a fantasy world, not the real world."

Among the issues still to be determined at trial: What additional penalties Trump might face, and what might happen with the multiple causes of action included in the attorney general's suit.

Former President Donald Trump stepped up his attacks on the judge overseeing and deciding his case, writing on Truth Social overnight that Justice Arthur Engoron should resign and be sanctioned for "abuse of power."

Similar to an earlier post, Trump criticized allegations regarding the value of his Mar-a-Lago estate, in addition to an appellate court's ruling that his lawyers unsuccessfully tried to use to limit the timeframe of the case.

Former President Trump posted on his Truth Social platform Sunday night that he intends to attend the opening of the trial.

"See you in court -- Monday morning," he wrote in a post.

Earlier Sunday, multiple sources familiar with the decision told ABC News that Trump was expecting to attend.

Trump will have no speaking role in court on Monday, but it is anticipated that he'll return to the courthouse toward the end of the state's case when court records show he will be called as a witness.

Deutsche Bank relied on the strength of Donald Trump's "financial profile" when deciding to loan the former president roughly $125 million related to the purchase of the Trump National Doral golf club in 2011, according to retired Deutsche Bank executive Nicholas Haigh.

Haigh testified that because Trump used the golf course and spa as collateral -- relatively "unusual" assets that Deutsche Bank would struggle to sell in the event of a foreclosure -- the bank leaned on the strength of Trump's larger portfolio.

"[Trump] is guaranteeing he will repay our loan -- all the money due on the loan," Haigh said about the terms of the loan. "He is also guaranteeing if the result is losing money, he will pay the cost of that shortfall."

Haigh said that he personally reviewed Trump's statement of financial condition when determining whether to sign off on the loan.

"My conclusion was the client owned a lot of real estate, which was not surprising," Haigh said about his findings after reading Trump's financial statement.

Previous witnesses in the trial have offered insights into how Trump's annual financial statement was drafted, finalized, and provided to banks to fulfill loan obligations. Haigh is the first witness to testify from the perspective of the banks, which considered the statements when deciding whether to do business with Trump.