How can believers have assurance of their salvation?

The assurance of salvation for believers rests on the truth of Scripture, specifically in Ephesians 2:8-9, which states that salvation comes by grace through faith. This assurance is not based on personal performance but the completed work of Christ on our behalf. Believers are reminded that the faith to believe itself is a gift from God. Therefore, our confidence in salvation comes not from our efforts but from the promise of God that all who trust in Christ are secure in His love and grace.