Barnabas was sent by the church in Jerusalem to investigate the ministry happening in Antioch where Greeks were being preached to. When Barnabas arrived, he saw evidence of God's grace at work and encouraged the believers to remain faithful. Barnabas was described as a good man, full of the Holy Spirit and faith. The document then provides reflections from Barnabas' life, including that he was open to God's grace, encouraged others, mentored leaders like Paul, was fallible but learned from mistakes, generous, and highly respected.