Acts 15:37-39

37 Barnabas wanted to take with them John called Mark.
38 But Paul decided not to take with them one who had deserted them in Pamphylia and had not accompanied them in the work.
39 The disagreement became so sharp that they parted company; Barnabas took Mark with him and sailed away to Cyprus.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.