Why is maintaining confidence in Christ important for believers?

Confidence in Christ is essential for believers because it is the foundation of their faith and assurance of salvation. As expressed in Philippians 3:3, true worshipers place their confidence not in their works but in Christ alone. This assurance empowers believers to live out their faith with boldness, knowing they are accepted in the beloved and secure in their salvation. Additionally, this confidence fosters spiritual growth, enabling believers to rely on the Holy Spirit's guidance and power in their daily lives, thus fulfilling their calling as witnesses of God's grace and truth.