Berean Standard Bible (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.
World English Bible (WEB)
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.
Strong's King James
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}.
The F.O.G *
(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 Message *
Young's Literal Translation
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.