Tyler S. Penley, 28, was jailed in the Washington County Detention Center on suicide watch.
Graybeal said Jeffrey R. Glick called 911 saying he had been stabbed multiple times, and when deputies arrived at the home at 658 Providence Road, they found him with multiple stab wounds to his face, head and body.
Glick was flown by helicopter to Johnson City Medical Center for emergency care. He was listed in stable condition Wednesday.
The sheriff said Penley lives in the home with Glick, and deputies took him into custody after Glick and witnesses reported that Penley had stabbed the man.
In a court record, Sgt. Gary Daugherty reported that witnesses said Penley attacked Glick with a stainless steel, straight-edge knife he had taken from the kitchen counter. They told deputies the attack occurred while Glick was standing defenseless in the living room.
“Penley was interviewed and admitted to the stabbing, stating that voices had told him to do it,” Graybeal said in the news release.
Penley was arraigned Wednesday in Sessions Court. He is due in court again Thursday. His bond was being held on $100,000 with a condition of a DNA test.