How do we know that Christians are made spotless and holy through Christ?

The assurance that Christians are made spotless and holy is rooted in the sacrificial death of Christ. Ephesians 5:27 states that He died 'that He might present it to Himself a glorious church, not having spot, or wrinkle, or any such thing, but that it should be holy and without blemish.' This underscores the transformative power of Christ's atonement. When believers trust in Him, they undergo a profound change, being cleansed from sin and made righteous in God's eyes. Additionally, passages like Isaiah 1:18 confirm this promise of cleansing, stating, 'Though your sins be as scarlet, they shall be white as snow.' Thus, it is through faith in Christ’s redemptive work that believers can fully embrace their status as holy before God.