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. He was open to God's grace, encouraged others, mentored leaders like Paul and John Mark, and was generous with his wealth and ministry despite also being fallible at times. Barnabas was highly respected by Paul and other early church leaders.