In the New Testament, one of the main words for evil is *poneros* (Strong's 4190), which describes things that are evil in their influence or effect. Unlike *kakos*, which is a general term for bad or wicked, *poneros* focuses on how evil operates, denoting evil that causes labor, pain, sorrow, and further evil. Ultimately, it signifies active rebellion, which in the biblical context equates to rebellion against God. It represents a more heinous form of evil than *kakos*, showing evil in action. The phrase *ho poneros* in the Greek, meaning "the wicked one," points directly to Satan the devil, illustrating the extent and activity of the evil associated with *poneros*—the kind of evil that he perpetrates.

The apostle John refers to Satan as the wicked one in I John 5:18-19, using the Greek term *poneros*, an adjective that signifies an active, malignant form of evil. This word describes something not only ugly and useless but also injurious and destructive. Like a cancer to humanity, Satan is aggressively engaged in destruction, causing pain, injury, and death through his malevolent influence.

Satan is referred to as the evil one in I John 5:19, where the Greek word *poneros* (G4190) is used. This term is an active noun that highlights an active and malignant kind of evil, portraying him as a cancer to the human race. In Galatians 1:4, Paul describes the present age as evil, emphasizing that Satan, as the evil one, is the reason this age deteriorates, deriving its corrupt character from his presence and activity.