An Idaho jury is set to weigh the death penalty Friday after convicting a man of killing his first wife and two children.

Chad Daybell was found guilty Thursday by an Ada County jury on first-degree murder and conspiracy charges relating to the deaths of his first wife and the two children of his second wife, according to a report.

The prosecution argued that Daybell murdered Tammy Daybell, 16-year-old Tylee Ryan, and 7-year-old Joshua “JJ” Vallo out of a desire for money, power, sex, and strange spiritual beliefs, and the state is seeking the death penalty.

The murders were done out of “what he considered his rightful destiny,” prosecutors said.

The now-convicted murderer’s second wife, Lori Vallow Daybell, was also recently convicted on conspiracy charges related to the death of Tammy Daybell and murder charges related to the deaths of her two children, the report noted.

She was sentenced to life without the chance of parole.

The remains of Tylee Ryan and JJ Vallo were discovered in June 2020 in Daybell’s backyard, but the two minors were believed to have been murdered in 2019, and the corpse of Tammy Daybell was found in October 2019, according to the report.

“The next month his wife is found dead in their marital bed. Seventeen days after the death of his wife, Tammy Daybell, this defendant is photographed laughing and dancing on a beach in Hawaii at his wedding to Lori Vallow, a woman who was his mistress and the mother of the children buried in the graves on his property,” Prosecutor Rob Wood said. “Three dead bodies.”

“It’s a sad day. JJ would have been 12 years old,” JJ Vallo’s grandfather, Larry Woodcock, said following Thursday’s verdict. “What did they accomplish? Nothing. What did they do? They destroyed families.”

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Daybell and his second wife were not, however, able to destroy the memories of those they killed, according to Woodcock.

“They can’t take that,” he said.