What does it mean that Christ is the head of the church?

In Colossians 1:18, the concept of Christ as the head of the church is a central theme. It signifies that He holds ultimate authority and is the guiding force in the spiritual life of the church. This relationship is characterized by His care and nurturing of the body—just as the head governs the body. Each member of the church is united to Him, and thus, experiences His grace and power. Understanding Christ's headship encourages believers to submit to His Lordship and recognize their dependency on Him for spiritual growth and health.