Why is eternal security important for believers?

Eternal security is a crucial aspect of the gospel of grace, as it emphasizes that salvation is solely the work of God, not contingent upon human effort. Once a person is truly regenerated or born again by God's power, they are granted eternal life, which assures them that their relationship with God is secure. This is not a license to sin but rather a comfort that motivates believers to live faithfully, as their salvation rests in God's faithfulness, not their own. Therefore, the assurance of eternal security brings joy and peace to the heart of the believer.