How do we know the doctrine of separation from sin is true?

The doctrine of separation from sin is supported by various scriptures that underscore the importance of holiness and the need to distance oneself from sinful practices. For instance, 2 Corinthians 6:14-17 calls for believers to separate themselves from the defilements of the world and to be distinct as God's people. This separation is not arbitrary; it reflects God’s holiness and His desire for His people to reflect His character.

Moreover, the doctrine is exemplified by the teachings of Jesus and the apostles. In Matthew 5:30, Jesus emphasizes the seriousness of sin, suggesting drastic measures to avoid it. Additionally, in 1 Corinthians 15:33, the Apostle Paul warns against the corrupting influence of bad company, reinforcing the idea that aligning oneself with sin is detrimental to one’s faith and witness. Thus, the doctrine is established through both direct commands and practical warnings found throughout the New Testament, demonstrating its relevance and truth in guiding the Christian life.