On Monday, police confirmed that 24-year-old Murray was the gunman in the deadly shootings at both the Youth With a Mission center on the Faith Bible Chapel campus in Arvada and at New Life Church in Colorado Springs. Three people, including Murray, were killed in Colorado Springs, and two others died in Arvada. Five other people were wounded.
"You Christians brought this on yourselves," Murray wrote on a Web site for people who have left Pentecostal and fundamentalist religious organizations.
It was the most recent posting of his on the site, dated Sunday, December 9 at 11:03 a.m.
Murray lived with his parents in a home in unincorporated Arapahoe County where police conducted a search on Sunday night.
In the Web writings, which are now being investigated by Colorado Springs Police, Arvada Police and the FBI, Murray warned, "I'm coming for EVERYONE soon and I WILL be armed to the @#%$ teeth and I WILL shoot to kill. ...God, I can't wait till I can kill you people. Feel no remorse, no sense of shame, I don't care if I live or die in the shoot-out. All I want to do is kill and injure as many of you ... as I can especially Christians who are to blame for most of the problems in the world."
If the time on the posting is accurate, it was posted after the 12:30 a.m. shooting Sunday morning in Arvada and before the 1:10 p.m. Sunday afternoon shooting in Colorado Springs.
Murray's first posting on the day of the shootings is time stamped 10:50 a.m. It begins with a goodbye to those he has corresponded with for the past several months.
"You guys were awesome. It's time for me to head out and teach these (expletive) a lesson."
Murray continued, "Thanks for listening and all ... even though even many of you ex-Pentecostals don't understand ......(sic) See you all on the other side, we're leaving this nightmare behind to a better place."
Then Murray posted the 11:03 writing quoted above. That writing mirrors written statements by Columbine gunman Eric Harris.
After that final posting, one of the other Web site users realizes what's happened and wrote, "Oh no. I just saw this on the news."
Another wrote, "Yes, please don't do it. You'd only make them into martyrs and yourself into a fanatical, hateful zealot, in the public opinion."
The only other posting that referred to Murray was a user asking everyone to leave the Web site to chat about Murray elsewhere to avoid the media finding out.
9NEWS attempted to contact the webmaster without success. 9NEWS is not naming the Web site to protect the privacy of its users.
Investigators already have copies of Murray's writings and are studying other Web sites.
Throughout his writings, which spanned several months, Murray's violence continued to accelerate.
Some of the users tried to counsel Murray and one psychologist even offered her services after reading his poem called "Crying all alone in pain in the nightmare of Christianity".
Murray rebuffed her offer.
"I've already been working with counselors. I have a point to make with all this talk about psychologists and counselors 'helping people with their pain,'" he wrote.
Murray was shot and killed by a security guard at New Life Church. Investigators linked him to the Arvada shooting after they had matched gun casings found in Arvada to one of the handguns they found with Murray in Colorado Springs.
Investigators also say the physical description matches and evidence found at his home, plus interviews with family members, led them to believe Murray was the gunman in Arvada as well as Colorado Springs.
Click here to hear more about the reaction from Murray's family.
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