What does the Bible say about separation from the ungodly world?

The Scriptures instruct believers to be separate from the ungodly as a reflection of God's grace in their lives. This separation is not merely physical but also spiritual, as believers are called to reject the desires and influences of a world that opposes God's truth. As John Newton points out, before experiencing grace, individuals were all under the same influence of sin and disobedience, yet by God's mercy, some are awakened to seek truth and righteousness. This emphasizes the believer's duty to avoid the vanity and evils prevalent in the world and to pursue a life devoted to Christ.