2 Timothy 2:1

Thou therefore, my son
The illative particle, "therefore", shows the connection between this and the preceding chapter; the appellation, "thou, my son", expresses the apostle's tender affection for Timothy, and is the rather used to engage his attention to the advice he was about to give him; which is, that since he had received the true grace of God, and unfeigned faith dwelt in him; and since he had such gifts, qualifying him for the work of the ministry; and since so good a thing as the glorious Gospel of the blessed God was committed to his trust; and since there were so many who had departed from it, and so few that abode by it, he would have him

be strong in the grace that is in Christ Jesus;
by which may be meant either the free favour and love of God in Christ, ( Romans 8:39 ) which is in itself always strong, immovable, and unalterable; and is the strength and security of the saints, though they have not always the same strong believing views of it; and to be strong in it, is to be rooted and grounded in it, and to have a strong sense and firm persuasion of interest in it, and that nothing can separate from it: or else the Gospel, which is a declaration of grace, and is in Christ, and comes by him; and to be strong in it, is to preach it boldly, to defend it bravely, and courageously oppose every error and heresy, and every abettor thereof; and it also becomes every private believer to hold it fast, stand fast in it, abide by it, and earnestly contend for it; and so the phrase may stand opposed to (atyrwab Pyqt) , or (rbg) , "one strong in the law", which is so often used by the Jews ^F4: or rather by grace is meant the fulness of grace which is in Christ, for the supply of his people; for in that grace which is in him, and not in that which is in themselves, should their dependence be. It is very agreeable to be strong in grace received, in point of exercise, but not in point of contentment; so as to rest satisfied with the present measure of it, without growing in it, and going on to perfection; and much less in point of consolation, so as to derive peace and comfort from it; and still less in point of trust and confidence in it; for it is but a creature, though a very glorious one, being the workmanship of God, and very variable as to its exercise, and as yet imperfect; and not that, but the object of it, is to be trusted in: though indeed a person's enjoyment of everlasting glory and happiness may be strongly concluded from the work of grace which is begun in him; that being an immortal seed, and a well of living water springing up into eternal life; and with which glory is inseparably connected. But grace in Christ is what believers should always have recourse unto, and exercise faith on; and not only believe that there is such a fulness of grace in Christ, which they have both heard of and seen, and which they know is laid up for them, and given to them, and is sufficient for them; but they should go forth out of themselves unto it, and draw water with joy out of the full wells of salvation in Christ: and this grace is of a strengthening nature, both to ministers of the word, to enable them to fulfil their ministry, to bear reproaches, afflictions, and persecution for the Gospel, and the infirmities of weak brethren; and to private believers, to strengthen them against every corruption, temptation, and snare, to exercise every grace, and discharge every branch of duty.