Former President Donald Trump reiterated his plans to testify in his criminal trial as he exited the courtroom at the end of the day.

"We just had another hearing and the trial starts on Monday, which is long before a lot of people thought," Trump said. "The judge wants to go as fast as possible."

The former president again, without evidence, called the trial a witch hunt orchestrated by his political rivals.

-Mike Pappano

Judge Juan Merchan declined to order prosecutors to disclose their first witness after defense attorneys remade a request from yesterday.

"I still think that under the circumstances, the people's response is understandable, and I am not going to compel them to do anything," Merchan said, citing the hearing set for Tuesday to hold Trump in contempt for violating the judge's limited gag order.

Yesterday, prosecutors expressed concern that Trump might attack the initial witnesses if he learned their names. Today, prosecutor Joshua Steinglass offered a compromise -- that they would turn over the first witnesses name on Sunday with a strict condition.

"If that should be tweeted, that will be the last time we extend that courtesy," Steinglass said.

Steinglass said that while the testimony of the first witness will likely begin on Monday, it is unlikely the witness finishes their direct examination by the end of the day.

Court was subsequently recessed for the day.

An appeals court judge has denied the defense's request for an emergency stay of the trial.

Trump earlier Friday filed the emergency appeal as he sought to change the venue of the trial based on some of the responses prospective jurors gave during the jury selection process.

The appeals court judge denied Trump's request to delay the start of the trial.

Trump's prior attempts to move the trial out of Manhattan have failed.

"We're going to have opening statements on Monday morning," Judge Juan Merchan declared.

He made the pronouncement after admonishing the defense to stop filing letters "targeting individual decisions one by one by one."

"There comes a point where you accept my rulings," he told Trump and his defense team.

"I've entertained your motions. I've entertained your arguments," Merchan said. "There's nothing else to clarify. There is nothing else to argue. We are going to have opening statements on Monday. We are starting on Monday."

David Pecker, who once called Donald Trump "a personal friend of mine," flashed a big smile as he took the stand as the trial's first witness, belying the gravity of the moment.

Pecker cackled loudly into the microphone, jolting the room, when prosecutor Josh Steinglass, asked him about his various phone numbers that he struggled to remember.

Pecker, 72, was the publisher of the National Enquirer but prosecutors said he was "acting as a co-conspirator" in helping buy and bury damaging stories about Trump, including a doorman's false claim that Trump had fathered a love child and a Playboy model's claim of a sexual relationship with Trump, who has denied both allegations.

Trump, who once said Pecker would make a "brilliant" choice as editor of Time magazine, listened while leaning forward in his chair, arms crossed on the table, an unhappy look on his face.

Pecker testified that he had final say whether to publish any story involving a famous person.

"I had the final say of the celebrity side of the magazine," Pecker said. "We used checkbook journalism. We paid for stories."

Pecker is testifying pursuant to a subpoena. He has also secured a non-prosecution agreement with the Manhattan district attorney's office.