1 Corinthians 15:58 (BSB)

Therefore, my beloved brothers, be steadfast and immovable. Always excel in the work of the Lord, because you know that your labor in the Lord is not in vain.

From 1 Corinthians 15. Also in the ESV.

Commentary on 1 Corinthians 15:58

• John Calvin (Reformed), Calvin's Commentaries on 1 Corinthians 15:58: 58. Wherefore, my brethren Having satisfied himself that he had sufficiently proved the doctrine of the resurrection, he now closes his discussion with an exhortation; and this has much more force, than if he had made use of a simple conclusion with an affirmation.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 1 Corinthians 15:58: 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...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on 1 Corinthians 15:58: Verse 58. Therefore, my beloved brethren. In view of the great and glorious truths which have been revealed to us respecting the resurrection. Paul closes the whole of this important discussion with an exhortation to that firmness in the faith which ought to result from truths so glorious, and from hopes so elevated as these truths are fitted to impart.
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on 1 Corinthians 15:58: beloved--Sound doctrine kindles Christian love. steadfast--not turning aside from the faith of the resurrection of yourselves. unmovable--not turned aside by others (Co1 15:12; Col 1:23). the work of the Lord--the promotion of Christ's kingdom (Phi 2:30). not in vain--as the deniers of the resurrection would make it (Co1 15:14, Co1 15:17).