Barnabas is not a language or book of the Bible.

Barnabas was a friend, companion and instructor to Paul the Apostle right after Pauls conversion from being a persecutor of Christians to leading the early Christian Church.

Paul was blinded by a bright vision of Jesus on 'the road to Damascus' where he planned to persecute Christians, but the vision of Jesus changed all that and Barnabas helped Paul with his early ideals about Christianity after Paul was temporarily blinded- a real profound conversion.

14 of the Letters of the Apostles in The New Testament were written by Paul.