How do we know the sacrifice of Christ is sufficient for our sins?

The Scriptures teach that the sacrifice of Christ is not only sufficient but completely effective for the forgiveness of sins. In Hebrews 10:11-12, the contrast is drawn between the repeated sacrifices of the priests and the singular, perfect work of Christ. While the former could never take away sins, Christ’s single offering is sufficient and complete, placing Him at the right hand of God, as seen in Hebrews 10:12. His blood serves as the perfect atonement, appeasing God’s wrath and securing our status as holy and righteous before Him, which is foundational to the assurance of salvation.