What is the significance of assurance in a believer's life?

Assurance plays a crucial role in the life of a believer, as it allows them to rest in the certainty of their salvation and relationship with God. In Hebrews 6:11-12, believers are encouraged to show diligence to the full assurance of hope until the end, highlighting the importance of confidence in God's immutable promise. This assurance empowers believers to face difficulties and uncertainties with peace, knowing they are reconciled and loved by God. It affirms that while doubt may come from our sinful nature, our faith in Christ and His promises anchors our soul, providing stability and hope amidst life's challenges. A believer’s assurance is not based on their performance but rather on the unwavering character of God and His faithfulness to His word.