33After some time, they were released with peace from the brothers to the apostles.
35But Paul and Barnabas remained in Antioch, teaching and preaching the Word of the Lord, with many others also.
36Some time later Paul said to Barnabas, “Let us return now and visit our brothers in each city where we proclaimed the word of the Lord, to see how they are doing.”
37Now Barnabas resolved to take John (the one called Mark) along as well.
Acts 15
Acts 15:33-37