What does it mean that Christ's death was a necessity?

The necessity of Christ's death arises from the demands of divine justice and the need for atonement for sin. As stated in Hebrews 9:26, Christ appeared 'to put away sin by the sacrifice of himself.' This reveals that the plan of salvation required a perfect sacrifice to fully satisfy God’s justice. Without Christ's death, no sinner could be redeemed, underscoring the essential role of the crucifixion in God's redemptive plan. It highlights that our salvation is not based on human effort but on the fulfillment of God’s righteous requirements through Christ's sacrificial act.