What does the Bible say about the marks of God's people?

The marks of God's people are evident in their faith in Christ, their love for one another, and their distinct behavior as followers of Christ. In 1 Thessalonians 2:13, Paul emphasizes the importance of receiving the Word of God not merely as the words of men, but as the truth that works effectually in believers. This transformation and reception are clear signs that one is part of God's chosen people, evidencing their relationship with Christ and the convictions of the Holy Spirit in their lives.