Assurance of salvation comes through faith in Christ and understanding that He has dealt with our sins.
Assurance of salvation is rooted in the believer's trust in Christ's finished work and the understanding of God’s promises. In 2 Corinthians 5:19-21, we see that God does not impute their trespasses unto them, illustrating that believers are cleansed from sin and counted as righteous due to Christ's sacrifice. Furthermore, knowing that Christ bore our sins assures us that we need not fear condemnation. Romans 8:1 assures us that 'There is therefore now no condemnation to them which are in Christ Jesus.' Consequently, assurance is found in resting in the sufficiency of Christ’s work, enabling believers to live in confidence of their salvation.
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