Why is the doctrine of assurance important for Christians?

The doctrine of assurance is crucial for believers because it affirms the security of their salvation in Christ. Assurance informs believers that their acceptance before God is not based on their fluctuating feelings, but on the completed work of Christ on the cross, as expressed in John 10:28-29. Jesus assures His followers that no one can snatch them out of His hand. This assurance nurtures a deep sense of peace and confidence, allowing believers to live boldly in faith. In 1 John 5:13, it is written that we can know we have eternal life, which empowers believers to lead lives of joyful obedience and steadfast hope, reflecting the love and grace of God.