Acts 15:36-39 “…they had such a sharp disagreement that they parted company…”
Isn’t that kind of surprising? Paul and Barnabas, both we would consider “spiritual giants”, had a big fight. The Bible does not say one is right and the other wrong. The way they resolved it was to each do their part in furthering the kingdom of God. Paul’s ministry continued to broaden in his travels, and Barnabas discipled Mark to become a valuable minister (2Timothy 4:11) who later even wrote the gospel of Mark.