How do we know the sufficiency of Christ's sacrifice?

The sufficiency of Christ's sacrifice is central to the gospel message. In Romans 3:25, we read that God presented Christ as a sacrifice of atonement, through the shedding of His blood. This highlights that Christ's death was intentional and powerful, accomplishing the redemption of His people. It was not a mere martyrdom; rather, it was a substitutionary atonement where He bore the wrath of God on behalf of His elect. Furthermore, Hebrews 10:14 assures us that 'For by a single offering he has perfected for all time those who are being sanctified,' indicating that His sacrifice is not only sufficient but also complete in its effectiveness for salvation, securing eternal life for His chosen ones.