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.
17. say to Archippus—The Colossians (not merely the clergy, but the laymen) are directed, "Speak ye to Archippus." This proves that Scripture belongs to the laity as well as the clergy; and that laymen may profitably admonish the clergy in particular cases when they do so in meekness. Bengel suggests that Archippus was perhaps prevented from going to the Church assembly by weak health or age. The word, "fulfil," accords with his ministry being near its close (Col 1:25; compare Phm 2). However, "fulfil" may mean, as in 2Ti 4:5, "make full proof of thy ministry." "Give all diligence to follow it out fully"; a monition perhaps needed by Archippus.
in the Lord—The element in which every work of the Christian, and especially the Christian minister, is to be done (Col 4:7; 1Co 7:39; Php 4:2).