How do we know Christ's sacrificial death is sufficient for salvation?

We know Christ's sacrificial death is sufficient for salvation based on the comprehensive biblical narrative that presents Him as the ultimate sacrifice. In John 1:29, John the Baptist declares Jesus as 'the Lamb of God who takes away the sin of the world,' illustrating that His death fulfills Old Testament sacrificial laws. Furthermore, Hebrews 10:14 states, 'For by a single offering He has perfected for all time those who are being sanctified,' emphasizing that Christ's sacrifice was complete and effective. This is contrasted with the continual animal sacrifices that only temporarily covered sins without erasing them. The assurance of His sufficiency lies in His resurrection, which demonstrates that He conquered sin and death, providing believers with a firm foundation for their faith and a promise of eternal life.