{30} Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the {f} Lord.

(30) An exhortation taken from the profit that ensues, that seeing they understand that the glory of the other life is laid up for faithful workmen, they continue and stand fast in the truth of the doctrine of the resurrection of the dead.

(f) Through the Lord's help and goodness working in us.

People's New Testament

15:58 Therefore, brethren, be ye steadfast, unmoveable. Firm as a rock, devoted to Christian life, for their faith is not vain. Compare 1Co 15:14,17.

Ye know that your labour is not vain in the Lord. Jesus Christ is The Resurrection and the Life (Joh 11:25). The hope of immortality hath sure foundations.

Wesley's Notes

15:58 Be ye steadfast - In yourselves. Unmovable - By others; continually increasing in the work of faith and labour of love. Knowing your labour is not in vain in the Lord - Whatever ye do for his sake shall have its full reward in that day. Let us also endeavour, by cultivating holiness in all its branches, to maintain this hope in its full energy; longing for that glorious day, when, in the utmost extent of the expression, death shall be swallowed up for ever, and millions of voices, after the long silence of the grave, shall burst out at once into that triumphant song, O death, where is thy sting? O hades, where is thy victory?

Jamieson-Fausset-Brown Bible Commentary

58. beloved-Sound doctrine kindles Christian love.

steadfast-not turning aside from the faith of the resurrection of yourselves.

unmovable-not turned aside by others (1Co 15:12; Col 1:23).

the work of the Lord-the promotion of Christ's kingdom (Php 2:30).

not in vain-as the deniers of the resurrection would make it (1Co 15:14, 17).

in the Lord-applying to the whole sentence and its several clauses: Ye, as being in the Lord by faith, know that your labor in the Lord (that is, labor according to His will) is not to be without its reward in the Lord (through His merits and according to His gracious appointment).

Matthew Henry's Concise Commentary

15:51-58 All the saints should not die, but all would be changed. In the gospel, many truths, before hidden in mystery, are made known. Death never shall appear in the regions to which our Lord will bear his risen saints. Therefore let us seek the full assurance of faith and hope, that in the midst of pain, and in the prospect of death, we may think calmly on the horrors of the tomb; assured that our bodies will there sleep, and in the mean time our souls will be present with the Redeemer. Sin gives death all its hurtful power. The sting of death is sin; but Christ, by dying, has taken out this sting; he has made atonement for sin, he has obtained remission of it. The strength of sin is the law. None can answer its demands, endure its curse, or do away his own transgressions. Hence terror and anguish. And hence death is terrible to the unbelieving and the impenitent. Death may seize a believer, but it cannot hold him in its power. How many springs of joy to the saints, and of thanksgiving to God, are opened by the death and resurrection, the sufferings and conquests of the Redeemer! In verse 58, we have an exhortation, that believers should be stedfast, firm in the faith of that gospel which the apostle preached, and they received. Also, to be unmovable in their hope and expectation of this great privilege, of being raised incorruptible and immortal. And to abound in the work of the Lord, always doing the Lord's service, and obeying the Lord's commands. May Christ give us faith, and increase our faith, that we may not only be safe, but joyful and triumphant.

Matthew Henry's Whole Bible Commentary

Verse 58

In this verse we have the improvement of the whole argument, in an exhortation, enforced by a motive resulting plainly from it.

I. An exhortation, and this threefold:-1. That they should be stedfast-hedraioi, firm, fixed in the faith of the gospel, that gospel which he had preached and they had received, namely, That Christ died for our sins, and arose again the third day, according to the scriptures (v. 3, 4), and fixed in the faith of the glorious resurrection of the dead, which, as he had shown, had so near and necessary a connection with the former. "Do not let your belief of these truths be shaken or staggered. They are most certain, and of the last importance." Note, Christians should be stedfast believers of this great article of the resurrection of the dead. It is evidently founded on the death of Christ. Because he lives, his servants shall live also, Jn. 14:19. And it is of the last importance; a disbelief of a future life will open a way to all manner of licentiousness, and corrupt men's morals to the last degree. It will be easy and natural to infer hence that we may live like beasts, and eat and drink, for to-morrow we die. 2. He exhorts them to be immovable, namely, in their expectation of this great privilege of being raised incorruptible and immortal. Christians should not be moved away from this hope of this gospel (Col. 1:23), this glorious and blessed hope; they should not renounce nor resign their comfortable expectations. They are not vain, but solid hopes, built upon sure foundations, the purchase and power of their risen Saviour, and the promise of God, to whom it is impossible to lie-hopes that shall be their most powerful supports under all the pressures of life, the most effectual antidotes against the fears of death, and the most quickening motives to diligence and perseverance in Christian duty. Should they part with these hopes? Should they suffer them to be shaken? Note, Christians should live in the most firm expectation of a blessed resurrection. This hope should be an anchor to their souls, firm and sure, Heb. 6:19. 3. He exhorts them to abound in the work of the Lord, and that always, in the Lord's service, in obeying the Lord's commands. They should be diligent and persevering herein, and going on towards perfection; they should be continually making advances in true piety, and ready and apt for every good work. The most cheerful duty, the greatest diligence, the most constant perseverance, become those who have such glorious hopes. Can we too much abound in zeal and diligence in the Lord's work, when we are assured of such abundant recompences in a future life? What vigour and resolution, what constancy and patience, should those hopes inspire! Note, Christians should not stint themselves as to their growth in holiness, but be always improving in sound religion, and abounding in the work of the Lord.

II. The motive resulting from the former discourse is that their labour shall not be in vain in the Lord; nay, they know it shall not. They have the best grounds in the world to build upon: they have all the assurance that can rationally be expected: as surely as Christ is risen, they shall rise; and Christ is as surely risen as the scriptures are true, and the word of God. The apostles saw him after his death, testified this truth to the world in the face of a thousand deaths and dangers, and confirmed it by miraculous powers received from him. Is there any room to doubt a fact so well attested? Note, True Christians have undoubted evidence that their labour will not be in vain in the Lord; not their most diligent services, nor their most painful sufferings; they will not be in vain, not be vain and unprofitable. Note, The labour of Christians will not be lost labour; they may lose for God, but they will lose nothing by him; nay, there is more implied than is expressed in this phrase: it means that they shall be abundantly rewarded. He will never be found unjust to forget their labour of love, Heb. 6:10. Nay, he will do exceedingly abundantly above what they can now ask or think. Neither the services they do for him, nor the sufferings they endure for him here, are worthy to be compared with the joy hereafter to be revealed in them, Rom. 8:18. Note, Those who serve God have good wages; they cannot do too much nor suffer too much for so good a Master. If they serve him now, they shall see him hereafter; if they suffer for him on earth, they shall reign with him in heaven; if they die for his sake, they shall rise again from the dead, be crowned with glory, honour, and immortality, and inherit eternal life.