How do we know the cross is central to salvation?

The importance of the cross in salvation is underscored by its role in God's eternal plan. Revelation 13:8 refers to Christ as the Lamb slain from the foundation of the world, indicating that His sacrificial death was preordained before creation. This shows that God’s intention for salvation was not a reaction to humanity's sin but was planned as a part of His sovereign decree. Christ's death on the cross is the means by which we are redeemed, justifying sinners and displaying God's attributes fully.