What does the Bible say about why Christ died on the cross?

The Bible teaches that Christ's death was essential for the redemption of sinners. According to 1 Peter 3:18, Christ suffered for sins, the just for the unjust, that He might bring us to God. This highlights the substitutionary atonement, where the innocent (Christ) dies for the guilty (sinners) to fulfill God's justice and provide a way for believers to be reconciled with Him. Jesus' death was not merely an event in history but the crucial mechanism through which salvation is accomplished.