It was something they never expected to happen.
"It's a shock," parishioner Don Prime said.
Prime has been a member of the church for a few years. He wasn't at the prayer service Wednesday night when the fatal attack happened, but he did know everyone who was there -- including Moreno.
Prime said he never knew Moreno to cause any trouble.
Neighbors like Trinidad Centeno said they remember seeing him and the pastor of the church having a heated discussion outside one time.
"I saw him one night and he was here, and they were both having their little chat scuffle," Centeno said. "It wasn't violent or anything, and he came back and everything was smooth."
Another neighbor, Anthony Fonseca, said he was shocked by the attack and sorry that it happened. However, he said he had questions about the church before the attack because of all the people who would show up for services, their cars lining the street.
Now, after the stabbing, Fonseca said he has real concerns for his own family's safety.
"What if he ran outside and over here to my front door?" Fonseca said. "I have my wife and daughter in there, you know?"
"It's one of those things that you can't explain," Prime said. "It caught everyone by surprise and everyone's trying to piece together what happened."
Pastor Janson Abraham said that Moreno never said anything about why he did what he did, during the attack or after he was stopped.