4:10-18 Paul had differed with Barnabas, on the account of this Mark, yet he is not only reconciled, but recommends him to the churches; an example of a truly Christian and forgiving spirit. If men have been guilty of a fault, it must not always be remembered against them. We must forget as well as forgive. The apostle had comfort in the communion of saints and ministers. One is his fellow-servant, another his fellow-prisoner, and all his fellow-workers, working out their own salvation, and endeavouring to promote the salvation of others. The effectual, fervent prayer is the prevailing prayer, and availeth much. The smiles, flatteries, or frowns of the world, the spirit of error, or the working of self-love, leads many to a way of preaching and living which comes far short of fulfilling their ministry. But those who preach the same doctrine as Paul, and follow his example, may expect the Divine favour and blessing.

14. It is conjectured that Luke "the beloved physician" (the same as the Evangelist), may have first become connected with Paul in professionally attending on him in the sickness under which he labored in Phrygia and Galatia (in which latter place he was detained by sickness), in the early part of that journey wherein Luke first is found in his company (Ac 16:10; compare Note, see on [2435]Ga 4:13). Thus the allusion to his medical profession is appropriate in writing to men of Phrygia. Luke ministered to Paul in his last imprisonment (2Ti 4:11).

Demas—included among his "fellow laborers" (Phm 24), but afterwards a deserter from him through love of this world (2Ti 4:10). He alone has here no honorable or descriptive epithet attached to his name. Perhaps, already, his real character was betraying itself.