Why is believing in Christ's redemption important?

The doctrine of redemption through Christ is central to the Christian faith. Ephesians 1:4-5 teaches us that God chose a people for Himself from before the foundation of the world, entrusting them to Christ for their salvation. This act of redemption, whereby Jesus laid down His life for His people, signifies the fulfillment of God's justice and mercy. Without belief in this redemptive work, individuals remain in their sinful state and separated from God, which makes the belief in Christ crucial for eternal life.