It's not the start they wanted! Acts 15:36-41
“And after a few days, Paul said to Barnabas, 'Let us go back and visit the brethren in all the cities where we preach the word of the Lord and see how they are.' Now Barnabas wanted to take with him John named Mark. But Paul thought it best not to take with them someone who had retired with them to Pamphylia and had not gone with them to work. And a strong disagreement arose for them to separate. Barnabas took Mark with him and left for Cyprus. But Paul chose Silas and left, commended by the brothers to the grace of the Lord. And he passed through Syria and Cilicia strengthening the churches”.