John Chrysostom

"Only Luke is with me." For he adhered to him inseparably. It was he who wrote the Gospel, and the General Acts; he was devoted to labors, and to learning, and a man of fortitude. "Take Mark, and bring him with thee, for he is profitable to me for the ministry." It is not for his own relief, but for the ministry of the Gospel that he wanted him. For though imprisoned, he did not cease to preach.