"Therefore, my beloved brethren, be ye steadfast, unmovable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain the Lord" (1 Corinthians 15:58, KJV).
"Do not let your belief of these truths be shaken," the apostle Paul was saying to the Corinthian believers. "They are most certain, and of the utmost importance."
In the context, you will remember that Paul had just been talking about the resurrection, and now he wanted them to be steadfast believers of this great truth. The person who has no belief in the afterlife - the resurrection - is of all men most miserable. His motto is: "Eat, drink and be merry, for tomorrow we die."
Paul also exhorts believers to be immovable in their expectation of being raised incorruptible and immortal. Christians should never lose sight of this hope of the gospel:
"The only condition is that you fully believe the Truth, standing in it steadfast and firm, strong in the Lord, convinced of the Good News that Jesus died for you, and never shifting from trusting Him to save you. This is the wonderful news that came to each of you and is now spreading all over the world. And I, Paul, have the joy of telling it to others" (Colossians 1:23).
Having determined to remain steadfast and unmovable for the rest of their lives, believers then are ready with God's help to labor faithfully for the Lord, knowing that such labor is not in vain.
Today's Action Point
Drawing by faith upon the supernatural resources of the Holy Spirit, I will keep my expectation and my hope steadfast and unmovable, continuing my service for the Lord with the confident assurance that it will not be in vain.