What gives Christians assurance of salvation?

The assurance of salvation for Christians stems from two main sources: the promises of God and the sufficiency of Christ's atoning work. Romans 8:1 assures us that there is no condemnation for those who are in Christ Jesus, providing the believer with confidence that our sins are forgiven and not held against us. Moreover, Hebrews 9:12 tells us that Jesus entered the holy place once for all, securing eternal redemption. This signifies that His sacrifice is perfect and complete, requiring no further work on our part. Our security is thus firmly rooted in Christ—what He has done and who He is—instead of our fluctuating feelings or performances. Trusting in these truths assures us of our standing before God and encourages us to live joyfully in light of His grace.