Why is the concept of eternal security important for Christians?

The doctrine of eternal security, often summarized as 'once saved, always saved,' is significant for Christians as it affirms that those who are truly saved will not lose their salvation. This doctrine is rooted in the promises of Scripture, such as John 10:28-29, where Jesus states that no one can snatch His sheep from His hand. The assurance of salvation leads to a deeper relationship with God, freeing believers to engage in good works and evangelism, knowing their eternal destiny is secure. Furthermore, understanding that salvation is a gift of grace, not based on our works, allows believers to live confidently, knowing that their standing before God is assured through faith in Christ alone, as reflected in Philippians 1:6, which assures us that He who began a good work will complete it until the day of Christ Jesus.