The discordant separation of Paul and Barnabas is indicated by a very strong word in Greek (Their disagreement was so sharp). They were two dedicated men who disagreed about giving John Mark, Barnabas’s cousin, a second chance to join their missionary journey (Colossians 4:10). John Mark had left them in Pamphylia (see Acts 13:13). Eventually, Paul and John Mark made peace (2 Timothy 4:11).