THEOSISTertullian
An evil spirit can take root in an individual. The Spirit of God later transforms Saul into a different person, a prophet, prompting others to ask, "What has happened to the son of Kish?" Conversely, the evil spirit also shaped him into a different being, essentially leading him to become an apostate. At one time, Judas was regarded as one of the chosen disciples, even serving as the keeper of the purse. While he had yet to manifest as a traitor, he was not entirely sincere; eventually, the devil entered into his heart. Thus, if a person's soul is born without the influence of either the Spirit of God or the devil, it exists independently until one of those spirits takes residence within it. In this independent state, the soul is pure and untainted in its essence, drawing its breath solely from the divine substance bestowed by God.