Tim Keller's work discusses the concept of vocation, asserting that work is a calling meant for service beyond self-interest, rooted in Christian scripture. He emphasizes the dignity of all work as reflecting God's image, encouraging individuals to view work as a means to serve others and fulfill divine purpose, while acknowledging the frustrations and alienation that can arise from it in a fallen world. Ultimately, the gospel provides a foundation for meaningful work by freeing individuals from the need for validation through their jobs and allowing them to serve others with love and competence.