How do we know Christ's death and resurrection are necessary for salvation?

The necessity of Christ's death and resurrection is foundational to the Christian faith, as it confirms God's redemptive plan. In Luke 24:46, it is stated that 'thus it is written, and thus it behoved Christ to suffer and to rise from the dead the third day.' Without His death, there would be no remission of sins, for as Hebrews 9:22 states, 'without the shedding of blood is no remission.' The resurrection is equally vital, as Romans 4:25 teaches that Christ was 'raised again for our justification.' His resurrection affirms His victory over sin and death, and ensures our justification and eternal life, proving that His sacrifice was accepted by the Father.