Why is the concept of substitution important in Christian theology?

Substitution is a core doctrine in Christian theology, illustrating the principle that Jesus Christ acts as our representative before God. In the context of Ezra, the mention of the Passover lamb serves as a powerful picture of substitutionary atonement. Just as that lamb's blood spared the Israelites from death, Christ's sacrifice on the cross serves as the ultimate atonement for sin, allowing believers to escape divine wrath. The righteousness of Christ is imputed to sinners, enabling them to stand before God justified. This doctrine is echoed in 2 Corinthians 5:21, where it states that God made Jesus, who knew no sin, to be sin for us, so we might become the righteousness of God in Him. Understanding substitution underscores the seriousness of sin and the depth of God's love, revealing the lengths to which He went to secure salvation.