COLORADO SPRINGS , Colorado ( CNN ) -- Matthew Murray wrote on an Internet forum of how he hated Christians between attacks on a mission center and church on Sunday , according to Denver-area media reports . A former roommate took this photo of Matthew Murray performing in a December 14 , 2002 , Christmas program . `` You Christians brought this on yourselves , '' Murray wrote at 11:03 a.m. on Sunday , CNN affiliate KUSA reported on its Web site . `` I 'm coming for EVERYONE soon and I WILL be armed to the @ # % $ teeth and I WILL shoot to kill , '' the KUSA report quoted from the final posting . With the exception of symbols used to replace an expletive , this was the same wording used by Eric Harris in a posting before he and Dylan Klebold went on a shooting rampage at Columbine High School in 1999 . The posting , under the user name `` nghtmrchld26 , '' was made several hours after Murray killed two people at the Youth With a Mission Center in Arvada , Colorado , and a few hours before Murray killed two people at the New Life Church in Colorado Springs . He later died in a shootout with a church security guard . Watch accounts of shooting victim , former bunkmate » . Five years ago , the Youth With A Mission center left Murray off a missionary trip for which he had trained . Peter Warren , director of the missionary center , said Monday that managers left Murray off the 2002 trip to Bosnia for health reasons . Joe Istre , president of Association of Former Pentecostals and administrator of the Web forum Murray used , said several of the forum 's members tried to help Murray in recent months . `` He appeared to be an isolated person , '' Istre said . `` We tried to tell him to get help , to get some counseling , but he just laughed at it . '' A psychologist offered to help Murray after reading a poem he posted called `` Crying all alone in pain in the nightmare of Christianity , '' KUSA reported . `` I 've already been working with counselors , '' Murray replied , according to KUSA . `` I have a point to make with all this talk about psychologists and counselors 'helping people with their pain . ' '' Istre said the Sunday posting was the first one that included violent threats . `` He scared a lot of people in the forum throughout the last few months with some of pretty crazy posts but never anything violent . '' Istre said he was allowed to continue his postings `` because he needed to vent . '' Murray also copied from the writings of Columbine gunman Harris in another case : . `` God , I ca n't wait till I can kill you people . Feel no remorse , no sense of shame , I do n'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 . '' While making the postings , Murray also sent hate mail to the mission center , the Rocky Mountain News reported . I-Report contributor Richard Werner , 34 , said Monday he was a worker at the center in Arvada , Colorado , in 2002 , the same time as Murray . Werner said five days before Murray was told in 2002 he could not make the Bosnia trip , Murray performed a pair of dark rock songs at a concert at the mission that made fellow workers `` pretty scared . '' The performance -- which included a song by rock band Linkin Park and another that had been recorded by controversial rocker Marilyn Manson -- followed months of strange behavior , Werner said . Werner , of Balneario Camborius , Brazil , said he had a bunk near Murray 's and that Murray would roll around in bed and make noises . `` He would say , 'Do n't worry , I 'm just talking to the voices , ' `` Werner said . `` He 'd say , 'Do n't worry , Richard . You 're a nice guy . The voices like you . ' `` Werner said he instantly suspected Murray when he heard the news of Sunday 's shootings . `` I turned to my wife and I said , ' I know who did it . It 's Matthew , ' `` he said . `` It was so obvious . `` For four months , he was sleeping right next to me . Those are the things you do n't imagine , but when it happened it was so obvious . '' Werner said his `` heart is crushed '' by news of the shootings . Phil Abeyta , who identified himself as Murray 's uncle , read a statement from the family Monday asking for forgiveness . `` Our family can not express the magnitude of our grief for the victims and families of this tragedy , '' he said. `` ... We can not understand why this has happened . '' Abeyta spoke at a news conference with spokesmen from the Youth With A Mission center . E-mail to a friend .
NEW : CNN copied Matthew Murray 's writings in Web postings . Marilyn Manson , who killed four Sunday , worked at missionary center in four Sunday . He was left off mission trip for health reasons , center official says . He performed Marilyn Manson , Linkin Park songs at concert , co-worker says .