Judge Merchan told the jury that they should not speculate about the sentence or punishment in the case.

"It will be my responsibility to impose an appropriate sentence," Merchan said.

The judge also had to advise the jury about this yesterday after defense lawyer Todd Blanche argued that the jury "cannot send somebody to prison" based on Michael Cohen's testimony.

The jury appears to be laser focused on Merchan during the charge. Half of the jurors appear to be taking notes.

"It is not my responsibility to judge the evidence here. It is yours," Judge Merchan told the jurors as he began his instructions for their deliberations.

"You are the judges of the facts, and you are responsible for deciding whether the defendant is guilty or not guilty."

The judge instructed jurors on avoiding "stereotypes" or "implicit biases" in their deliberations.

"As a juror you are asked to make a very important decision about another member of the community," he said.

Judge Juan Merchan took his seat on the bench, and Trump flashed a closed mouth smile when the judge said good morning in his usual fashion.

Before bringing the jury back into the courtroom, Merchan asked the parties to confirm the proposed verdict form.

Prosecutor Josh Steinglass flagged a minor typo, but both sides appeared to be in agreement about the form, which will the jury will fill out once they render a verdict.

After the jury was brought into the courtroom, Merchan told them the reading of the jury charge will take approximately an hour.

Former President Trump did not speak with reporters as he entered the courtroom this morning, but instead made a series of posts on social media.

Referring to prosecutors' five-hour closing statement yesterday, Trump wrote, "THE D.A.’s OFFICE WAS ALLOWED TO GO ON WITH 5 HOURS OF BULL---- YESTERDAY."

The defense's closing argument took three hours.

Judge Merchan told the jury that they have the ultimate authority in determining the truthfulness of a witness' testimony -- an instruction that might come in handy given the emphasis that defense lawyers placed on Michael Cohen's testimony, which they say includes lies.

"You will alone determine the truthfully and the accuracy of the testimony of each witness," Merchan said.

He added that the jury could either disregard the testimony of an untruthful witness entirely, or disregard part of it.

"There is no particular formula" to determine credibility, Merchan said.

"You may consider whether the witness has any interest in the outcome of the case," he said -- another matter that might weigh on jurors' minds.

"You may consider whether a witness did have, or did not have, a motive to lie," the judge said.

Trump's attorney had told the jury Cohen had an "axe to grind" against his former boss. Prosecutors partially conceded that Cohen had a motive, acknowledging that, to date, he is the only one who suffered any consequences from the matter at hand.

Trump, at the defense table, appeared to look over to the jury and offer a bit of a closed-mouth grin.