Pseudo-Jerome
Catena Aurea · Markusevangelium 14
And Judas Iscariot, one of the twelve, went unto the Chief Priests, to betray him unto them. And when they heard it, they were glad, and promised to give him money. And he sought how he might conveniently betray him.
(ὁ περὶ τὸν βασιλέα χορὸς ap. Chrys.) But he was one of the twelve in number, not in merit, one in body, not in soul. But he went to the Chief Priests after he went out and Satan entered into him. Every living thing unites with what is like itself.