Galatians 2:1 (ESV)

1 Then after fourteen years I went up again to Jerusalem with Barnabas, taking Titus along with me.

Barnabas (son of encouragement) was the nickname that the apostles gave to Joseph, a prominent member of the early church (Acts 4:36). He would later introduce Paul to Peter and other apostles in Jerusalem (Acts 9:27), serve as a teacher in Antioch (Acts 13:1), and also accompany Paul on his first missionary journey (Acts 13:2 – 14:28). They would later have a disagreement about John Mark (Acts 15:36–40). Barnabas’s confidence was eventually vindicated and acknowledged by Paul (Colossians 4:10; 2 Timothy 4:11; Philemon 1:24).1