How do we know that our lives are fruitful? Understanding the relationship between faithfulness and fruitfulness is vital. Our fruitfulness is ultimately God's work, accomplished as we seek to be faithful in all aspects of our lives and in all to which He calls us. Ultimately, all of our fruitfulness comes from our union with Jesus Christ, the life-giving, fruit-supplying vine. Christ is committed to making us fruitful in our lives and labors so that God will get glory for the work He has done in His people. Let us seek to be steadfast and immovable in everything to which God calls us in His Word so that "our labors are not in vain in the Lord."