What is the meaning of 1 Corinthians 15:58?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

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.

Berean Standard Bible (BSB)

Therefore, my beloved brothers, be steadfast, immovable, always abounding in the Lord’s work, because you know that your labor is not in vain in the Lord.

World English Bible (WEB)

Therefore{G5620}, my{G3450} beloved{G27} brethren{G80}, be ye{G1096}{(G5737)} stedfast{G1476}, unmoveable{G277}, always{G3842} abounding{G4052}{(G5723)} in{G1722} the work{G2041} of the Lord{G2962}, forasmuch as ye know{G1492}{(G5761)} that{G3754} your{G5216} labour{G2873} is{G2076}{(G5748)} not{G3756} in vain{G2756} in{G1722} the Lord{G2962}.

Strong's King James

(58) So then my beloved brothers, be steadfastly unshakeable, always abounding in the work of The אָדוֹן Adonai-Lord, knowing that your labour isn't empty-handed in יהוה YAHWEH.

The F.O.G*

[58] Therefore, my beloved family, stand firm. Let nothing move you. Always give yourselves fully to the Lord's work, because you know that in the Lord, your labor isn't wasted—it has eternal significance!

The F.O.G Paraphrase

so that, my brethren beloved, become ye stedfast, unmovable, abounding in the work of the Lord at all times, knowing that your labour is not vain in the Lord.

Young's Literal Translation