Holding fast the faithful word
The doctrine of the Gospel, so called because it is true, and to be believed; it is the word of truth, and truth itself, and contains nothing but truth; and because it never deceived any, that gave credit to its doctrines, and its promises; and because it is pure, unmixed, and unadulterated, and is the sincere milk of the word; and because in it is a glorious display of the faithfulness of God to his perfections, to his holiness and justice, to his law, and to his covenant, word, and oath; and of the faithfulness of Christ, to him that appointed him and to his covenant engagements, and which has appeared in the discharge of his various offices: and this is not only to be held forth by the elder, but to be held fast, and tenaciously abode by; in opposition to all wavering about it, departure from it, dropping or concealing any part of it, and pusillanimity concerning it; whatever temptations there may be to the contrary, through popular applause on the one hand, and reproaches and persecutions on the other; and though there may be many that may endeavour to wring it out of his hands; see ( 2 Timothy 1:13 ) ,
as he hath been taught;
or "according to doctrine": that is, according to the doctrine of the Scriptures, Christ, and his apostles; according to the doctrine that lies in the Scriptures that was delivered by Christ, and preached by his apostles; whatever is according to that should be held fast:
[or] which is for doctrine,
which tends to teach, instruct, and edify the minds of men, that ought to be constantly abode by: or as the elder himself has been taught, not by men, in a theoretical way, as logic, rhetoric, and other arts and sciences are taught; for such who are only taught the faithful word in this way, are not likely to hold it fast, in a time of temptation; but as he has been taught it experimentally by the Spirit of God; and such an one, who has not only the knowledge of it in his head, but the experience of it in his heart, will hold it, and hold it fast against all opposition:
that he may be able, by sound doctrine, both to exhort and to
convince the gainsayers;
sound doctrine is the faithful word, the wholesome words of our Lord Jesus Christ, which being retained, qualify an elder to discharge the following branches of his office; to "exhort" the members of churches to their duty, according to their age, sex, state, and condition, as in chapter 2 to which the doctrines of grace influence and engage; or to comfort them, as the word also signifies, and the Alexandrian copy reads, "to comfort them in all tribulation"; and this is one considerable part of the elder's work, to comfort souls under affliction, whether of body or mind; and sound doctrines, or the doctrines of the Gospel, are wonderfully suited to such a purpose: and the other part of his work is, "to convince gainsayers"; such who resist the truth, oppose themselves to it, cavil at it, and object against it; these are to be refitted, and convinced by the Scriptures, and arguments taken from them, as the Jews were by Apollos, ( Acts 18:28 ) and nothing is so powerful to do it as sound doctrine, and holding fast the faithful word.