“They had such a sharp disagreement that they parted company, and Barnabas took Mark with him and sailed off to Cyprus.” (Acts 15:39, CSB) Conflict is painful. Whether it’s within the family, on the job, or in the church, it hurts. Acts 15 relates a painful time in the friendship and ministry of Paul and Barnabas. As they made plans to revisit some of the places where they had ministered on their earlier trip, they had what the Bible describes as a “sharp disagreement.” Their point of contention was whether John Mark, Barnabas’s cousin, should accompany them. John Mark had…