A gunman attempted to shoot pastor Glenn Germany during his sermon at Jesus' Dwelling Place Church in Pittsburgh, Pennsylvania on Sunday.
Officials identified the gunman as 26-year-old Bernard Polite. Mr Germany escaped with his life because Mr Polite's firearm failed to discharge.
After Mr Polite's arrest, police found another man fatally shot at his North Braddock home.
The victim was identified as Derek Polite, 56. Police have not yet commented on Bernard Polite's relationship with him.
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Video taken by the church's deacon and posted online by Pastor Glenn Germany shows the moment the pastor suddenly found himself staring down the barrel of a gun.
Before the attempted shooting, Germany said Polite smiled at him.
Germany is hoping to use the story and stress to his parishioners that mental illness is real. The man had walked in and out of the room several times, Germany said.
Polite now faces multiple charges, including aggravated assault and attempted homicide.
Bail was denied for Polite and he is set to face a preliminary hearing on the charges next week.