What does the Bible say about the division between saved and lost?

The division in humanity presented in Scripture is fundamentally between the saved and the lost. This is illustrated in 1 Samuel 24, where David represents the saved—being a man after God's own heart—while Saul represents the lost, a reprobate king. The ultimate distinction is made by one’s relationship with Jesus Christ, as He is the means by which individuals come to know God. Those who are saved have been delivered from sin through Christ, while the lost remain in their transgressions.