How do we know the doctrine of worldliness is true?

The truth of the doctrine of worldliness lies in its biblical foundation, as stated in 1 John 2:15-17 where believers are commanded to avoid love for the world and its offerings. This is not merely a moralistic guideline but reflects our spiritual transformation. In John 12:31, Jesus speaks of the judgment of this world, underscoring its opposition to divine authority. Additionally, in Galatians 1:4, Paul articulates that Christ delivered us from this present evil age, indicating that true grace involves a radical break from worldly attachments. Hence, the doctrine is an essential aspect of Christian theology that reveals the importance of maintaining separation from the world's corrupting influences.