Why is the concept of substitution important in Christian theology?

The doctrine of substitution is foundational in Christian theology, illustrating the heart of the Gospel that Christ is our substitute. In Exodus 12, a lamb was provided to take the place of the firstborn, pointing to the ultimate Substitute, Jesus Christ, who bore the wrath of God for us. This concept is essential for understanding salvation; it emphasizes that Jesus, though sinless, willingly endured the punishment that we deserved, satisfying God's justice. The theology of substitution underscores God's love in providing a Savior who died in the place of sinners, ensuring that those who believe are justified through faith in His blood. This makes it evident that salvation is a result of God's gracious provision rather than human effort.