A former police officer, church youth worker and "serial seducer" who sexually abused teenage girls has been jailed for at least seven years and five months for his "disgusting conduct".
Wayne Paul Mason, 42, used his position of power and influence over his vulnerable victims for his own "sexual exploitation and gratification", Judge David Frearson said in the District Court in Sydney on Friday.
"He was a serial seducer of underage females, and he betrayed the trust of all those who entrusted their daughters with him," Judge Frearson said.
Mason hung his head in the dock as he was sentenced on 52 counts, mostly related to indecently assaulting and having sex with four girls under the age of 16 between 1996 and 2005.
He was found guilty by a jury in September of 44 counts mainly relating to the girls. He later pleaded guilty to several counts of disseminating child pornography.
The court heard Mason, a former police worker and a Baptist Church youth group leader, engaged in the "systematic seduction" of his young victims, lavishing them with gifts and attention before moving on to his next victim.
His trial heard how he had sex with one of his victims when she was 15 without her consent, telling her, "Now we are one."
He also bullied a victim into withdrawing an allegation about him.
"There were a number of warning signs as to the conduct of the offender," Judge Frearson noted.
The court heard that when one of the victims went to the church's minister to tell him of Mason's sexual advances towards another teenager, the minister said he didn't believe her and she would "get into trouble" if he was forced to report the claim to the Department of Community Services (DoCS).
Mason was supported throughout the trial by his partner, parents and church members, many of whom were in court on Friday for the sentencing.
"It is difficult to reconcile the person described by his referees with his conduct ... which demonstrates a callous disregard for the rights of the vulnerable," Judge Frearson said.
Nearly ten years after the offences, Mason was arrested and charged after one of his victims came across sexually explicit photoshopped photographs of herself and other girls on the internet.
Mason had shown no remorse for his actions and continued to deny they had ever happened, the judge said.
He claimed to have had a sexually repressed childhood and said he grew up in a household where there was a "strong disapproval" of sexual behaviour.
"None of that explains the disgusting behaviour that he engaged in," Judge Frearson said.
"Such a person, particularly in a position of influence, must be deterred from gratifying himself on the underaged."
The judge set a maximum prison sentence of 10 years, 11 months.
Taking into account time spent in custody, Mason will be eligible for parole in December 2019.
He made no reaction as the sentence was handed down and waved to family members as he was led away.
Some of his victims who were in court for the sentencing hugged family members afterwards.