TULSA, Oklahoma - After 4-days, a jury has finally been seated in the trial of a Broken Arrow teenager accused of stabbing 5-members of his family to death.

The jury pool consists of 11 women and 3 men.

Opening statements start Friday morning, and Michael Bever's attorney is warning the jury that the evidence is gruesome.

It's been four long days, but the judge has finally seated a jury of 12 people and two alternates to hear the evidence in Michael Bever's case.

Bever is accused of stabbing his parents and three of his siblings to death.

"Just to have citizens in our community who know how difficult this case is going to be, and they're willing to listen to that evidence and view that evidence. It's going to be tough," said Tulsa County District Attorney Steve Kunzweiler

One thing attorneys on both sides can agree on; it's going to be brutal.

Bever's defense attorney didn't comment after court Thursday, but repeatedly asked jurors if they were sure they could handle seeing and hearing the details of the crime.

"It's going to be an emotional issue, and it'll remain that way for the rest of these people's lives," said Kunzweiler. 

We already know jurors will hear from the surviving sister, who was 13-years-old at the time of the crime.

"For that young lady, in many respects, she's the reason that her little sister is alive," said Kunzweiler. 

Jurors will also hear the 911 call placed by 12-year-old Daniel before he died, among other sensitive pieces of evidence.

"I think people always [have] some kind of a pre-conceived notion about what's going to happen in a criminal case, and then when reality hits, it's hard," said Kunzweiler.