"Knowing of Satan’s offer of rulership to Jesus is vital to understanding why we must be “no part of the world.” It shows that the world of mankind in general, including its rulerships, has God’s Adversary as its invisible ruler. Jesus himself spoke of Satan as “the ruler of this world.” (John 12:31; 14:30; 2 Corinthians 4:4) The apostle Paul also referred to “wicked spirit forces,” demons under Satan’s control, as being the invisible “world rulers of this darkness.” Paul warned Christians of the need for spiritual armor to defend against these “rulers.”​—Ephesians 6:10-13