Barnabas
AD43 - Acts 11:22-26
Without Barnabas (Son of Encouragement), a Levite from Cyprus, a prophet and apostle, we may not have had Paul's ministry. When Barnabas was sent out on a mission to Antioch by the apostles in Jerusalem and believing he needed Paul's help, he went looking for him in Tarsus. He found Paul and brought him back to Antioch to minister together.
Again it was Barnabas who took Mark, also know as John Mark, under his wing when Paul rejected him. Later, after being trained by Barnabas, Mark was of great assistance to Paul.
Background Reading:
ACTS 11:22-26
Barnabas
22 News of this reached the ears of the church at Jerusalem, and they sent Barnabas to Antioch. 23 When he arrived and saw the evidence of the grace of God, he was glad and encouraged them all to remain true to the Lord with all their hearts. 24 He was a good man, full of the Holy Spirit and faith, and a great number of people were brought to the Lord. 25 Then Barnabas went to Tarsus to look for Saul (Paul), 26 and when he found him, he brought him to Antioch. So for a whole year Barnabas and Saul (Paul) met with the church and taught great numbers of people. The disciples were called Christians first at Antioch.
Again in Acts 9:27 Barnabas took Paul to the apostles.