It started when a Mormon missionary spreading "God’s word" randomly knocked on the door of a chatty outlaw motorcycle gang member.

But the unlikely mateship ended when the Mormon was choked and punched by the bikie during an ice-induced paranoid psychosis.

The victim was with other missionaries of the Church of Jesus Christ of the Latter Day Saints when he went to the home of Troy Plancis in October 2015.

(The victim) described you as having gone crazy. You continued to choke him whilst continuing to ask him questions.

Plancis, who told the victim he was a member of the Nomads Motorcycle Club but claimed in court he was no longer associated, befriended the missionary.

District Court judge Geraldine Davison said the victim told police it was immediately apparent that Plancis, who went by the nicknames of Towtruck Troy or Boisterous, was a member of an outlaw motorcycle gang. Eight months after their initial meeting and friendly exchange, the victim was walking with a bottle of rum past Plancis’s home as he cut his front lawn.

Plancis struck up a further conversation and they ended up drinking into the night.

The devout church-goer returned to Plancis’s home the next day to help tidy up but was told he should leave immediately because a dispute with another man over a $15,000 debt was likely.

Several days later, Plancis asked the man to meet another of his friends, but their unlikely mateship took an ominous turn when Plancis greeted him holding a sawn-off shotgun.

At Plancis’s insistence, the men caught up for drinks several times before the victim went to his home where he was coaxed into trying methamphetamine for the first time.

Your cookie settings are preventing this third party content from displaying. If you’d like to view this content, please adjust your Cookie Settings . To find out more about how we use cookies, please see our Cookie Guide.

Judge Davison said Plancis, in his drug-affected state, became convinced the churchgoer was a police informant and began choking him.

"(The victim) described you as having gone crazy. You continued to choke him whilst continuing to ask him questions," she said.

Unable to breathe and blacking out, the victim believed he was about to die when an enraged Plancis said: "Your blood will have three minutes of oxygen in it without taking a breath. You’ll die after three minutes. Let’s see if you can do that."

After choking the victim unconscious, then punching him in the face and choking him to the point of collapse again, Plancis suddenly stopped and escorted the man from his home.

He confronted the victim two days later, threatening him if he co-operated with police, leaving the man so terrified he had to flee his home.

Judge Davison said while there was conjecture over Plancis’ status with the Nomads, he was on parole over weapons.

Plancis was jailed five years and nine months, with a non-parole of three years.

- the Advertiser