The judge overseeing the Scott Guy murder trial has urged the jury to be staunch.
The jury has been deliberating since just before midday and has decided to go home for the night.
When they retired, the judge urged the 11-strong jury to not speak about the case to anyone.
They'll resume their deliberations in the morning.
Before the jury went out this morning, Justice Simon France advised jurors about evidence relating to deer thefts and arson and vandalism attacks that Macdonald has admitted to in the lead up to the murder.
"This isn't a trial about character. The fact that he's done bad things in the past, or has lived with a secret, matters only in so far as that evidence legitimately helps you decide this case."
Justice France put it to the jury that if Macdonald's arson attack had been on a home other than Scott and Kylee Guy's then it would be irrelevant.
He told jurors that Macdonald had lied about arson and vandalism attacks towards Scott Guy - but that didn't mean he’d lied about the murder.
"The weight you place on lies is a matter for you but you should not just assume that because he lied about things he was doing so to hide his involvement in Scott Guy's death. It's easy isn't it to think of reasons here why someone who had not killed Mr Guy might still lie about these things."
Justice France told the jury that they should not assume a lie is a sign of guilt, and people lie for many reasons.
He also told the jury not to consider the case as a 'whodunit' .
Justice France has told the jury they're not scientists or a commission of inquiry and must base their decision only on the evidence they've been presented with.
"This case has been popularly described as a 'whodunit', but it's not and you should put that idea to one side. What this case is, and all it is, is an allegation that Mr Macdonald killed Mr Guy - it's no wider than that."
Justice France reminded jurors that the burden of proof is always on the crown and it must be to a standard beyond reasonable doubt.
"Don't shrink from giving a verdict whatever it may be. I know you'll be aware of the high public interest, it must, I'm sure, seem a bit daunting at times. But if you just go about it as I've suggested and if you follow a process that you're all comfortable with, then there's no cause for concern."
He told the jury that their final verdict needs to be unanimous.
Justice France says it's not enough for the jury to think Ewen Macdonald is 'probably' guilty and has stressed he must be presumed innocent.
"You can see how unfair it would be if we said to someone 'you don't have to testify', and then somehow we use it against them. So just forget it, give it no weight. Focus, as I keep saying, on the evidence you do have, and whether that evidence leaves you sure or not."
Justice France says Ewen Macdonald also didn't have to say anything prior to the trial, but he chose to in police interviews.
He has also addressed lengthy evidence the jury heard about dive boots.
Justice France says the crown’s claim that Macdonald wore dive boots on the morning of the murder was disputed by the defence, who say the boot impressions were too big to have belonged to Macdonald.
"I think it's clear that a dive boot made the impressions at the scene. Whether it's a Proline, or something very close to it, whether the sizing evidence assists the crown or the defence, is a matter for you."
He has also told the jury they must assess evidence without emotion, including any sympathy for the Guy family.
"It's a horrible situation they're in but your focus in the jury room cannot be about achieving closure for them or wanting to give an answer. You probably will have admired the manner in which they've all given their evidence," he says.
Justice France says the only way for jurors to recognise the family's efforts is by going about their obligations in a neutral way.
Photo: Ewen Macdonald (NZ Herald)