That good thing which was committed to thee,.... By which he means either his ministerial work and office, which is a good work, the dispensation of which was committed to him, and which it became him so to observe, as that the ministry might not be blamed; or else the good and excellent gifts of the Spirit, which qualified him for the discharge of that work, and which were not to be neglected, but to be stirred up, exercised, and improved, lest they should be lost, or took away; or rather the Gospel, which was committed to his trust, to preach: and this may be called a good thing, from the author of it, who is good, whence it is named the Gospel of God, and the Gospel of Christ; and from the matter of it, it consists of good things come by Christ, the High priest, and which it publishes, such as peace, pardon, righteousness, and eternal salvation by him; and from the end and use of it, it being both for the glory of God, the magnifying the riches of his grace, and the exaltation of Christ; and also is the power of God in regeneration and sanctification unto salvation to everyone that believes.
And it being said to be "committed to" Timothy, denotes the excellency of it; that it is a treasure, as indeed it is a rich one, it contains the riches of grace, even the unsearchable riches of Christ, is more valuable than thousands of gold and silver: and that it is a trust, and requires faithfulness in ministers, who are the stewards of it; and that it is to be accounted for.
Wherefore great care should be had in dispensing and keeping it:keep by the Holy Ghost. It should be kept pure and incorrupt, free from all the adulterations and mixtures of men; and safe and sound, that it be not snatched away from the churches by false teachers.
And whereas the apostle knew, that neither Timothy, nor any other, were sufficient of themselves, for these things, he directs to the keeping of it by the Holy Ghost; who makes men overseers of churches, bestows gifts upon them, to fit them for their work, and leads them into all the truths of the Gospel; and under his influence and teachings, and by the assistance of his grace, are they enabled to discharge their trust, abide by the Gospel, and persevere in the ministration of it to the end.