How do we know Christ's sacrifice was sufficient for salvation?

The sufficiency of Christ's sacrifice is rooted in its perfect nature. Hebrews 10:12 states that 'this man, after he had offered one sacrifice for sins forever, sat down on the right hand of God.' This indicates that, unlike the repetitive sacrifices of the Old Covenant, Christ's offering was final and complete. His body was sinless and wholly pleasing to the Father, which is pivotal because only a perfect sacrifice can satisfy the wrath of God against sin. According to 1 Corinthians 11, the blood represents the New Covenant, signifying that through His death, believers are redeemed and sanctified, thus proving that His sacrifice is not only sufficient but all-encompassing for those chosen for salvation.