Important people introduced in chapter one that you can study and learn more about if it interests you:

1. Paul (Romans 1:1)
- The author of the letter, Paul is an apostle of Jesus Christ, called to spread the Gospel. He introduces himself as a servant of Christ Jesus, called to be an apostle and set apart for the gospel of God.

2. Jesus Christ (Romans 1:1)
- Central to the Christian faith, Jesus is the Son of God, whose life, death, and resurrection are the foundation of the Gospel that Paul preaches.

3. David (Romans 1:3)
- The second king of Israel, David is mentioned in reference to Jesus being a descendant of David according to the flesh, highlighting Jesus' royal lineage.

(Bible Hub)