What does the Bible say about the distinction between believers and the world?

The Apostle John in 1 John 5:19 states, 'We know that we are of God, and the whole world lieth in wickedness.' This distinction is fundamental in understanding the biblical narrative, as the New Testament epistles are primarily addressed to believers. John emphasizes throughout his letters the difference between the people of God and the world, reinforcing that God's promises and truths apply specifically to His chosen ones. The distinction serves as a reminder of our identity in Christ and the calling we have away from the ways of the world.