Correct Option: A. Barnabas Detailed Explanation:

1. Context of Paul's First Missionary Journey:
2. The First Missionary Journey of Paul is documented in the Book of Acts, specifically in Acts 13 and 14. This journey marks a significant moment in the early Christian church as it was the first time Paul, previously known as Saul, actively spread the Gospel to Gentiles (non-Jews) outside of Jerusalem.
3. Who Accompanied Paul?:
4. Barnabas was a key figure in the early church and is mentioned in Acts as a Levite from Cyprus. He was known for his encouragement and support of the apostles, particularly Paul. Barnabas played a crucial role in introducing Paul to the other apostles after his conversion (Acts 9:26-27).
5. The Journey:
6. In Acts 13:2-3, the Holy Spirit instructs the church in Antioch to set apart Barnabas and Saul (Paul) for the work to which they were called. They were then sent off together, marking the beginning of their missionary efforts.
7. Significance of Barnabas:
8. Barnabas was not only a companion but also a mentor to Paul during this journey. His experience and established reputation in the church helped to validate Paul’s ministry, especially as Paul was still relatively new to the apostles and the broader Christian community.

Why the Other Options are Wrong or Weaker:

• B. Lucius of Cyrene:
• Lucius is mentioned in Acts 13:1 as one of the prophets and teachers in the church at Antioch, but he did not accompany Paul on his First Missionary Journey. His role was more of a supporter within the church rather than a traveling companion.
• C. Manaen:
• Manaen is also mentioned in Acts 13:1 as one of the leaders in the church at Antioch. Like Lucius, he did not join Paul and Barnabas on their journey. His involvement was limited to the church community in Antioch.
• D. Peter:
• Peter, one of the original apostles and a prominent leader in the early church, did not accompany Paul on this journey. In fact, Peter was primarily focused on ministering to the Jewish community, while Paul was called to reach out to the Gentiles. Their paths did intersect later in the New Testament, but not during this specific missionary journey.

Summary of Key Points:

• Paul's First Missionary Journey: Documented in Acts 13-14, it was a pivotal moment for spreading Christianity beyond Jewish communities.
• Barnabas: Accompanied Paul, serving as a mentor and supporter, crucial for validating Paul’s ministry.
• Other Options: Lucius and Manaen were leaders in the Antioch church but did not travel with Paul; Peter focused on Jewish ministry and was not part of this journey.
• Importance of Companionship: The partnership between Paul and Barnabas highlights the importance of support and collaboration in ministry work.

This thorough understanding of the First Missionary Journey and the roles of its participants is essential for grasping the early church's dynamics and the spread of Christianity.