Why is the sacrifice of Christ necessary for salvation?

The necessity of Christ's sacrifice is central to the Christian faith, as articulated throughout Scripture. In 1 Kings 18, Elijah's confrontation with the prophets of Baal illustrates that no human effort or sincerity can atone for sin; only God's appointed sacrifice can cover transgressions. The fire from heaven consuming Elijah's offering symbolizes God's acceptance of the true sacrifice, while foreshadowing the ultimate atonement provided by Christ. When Jesus was made sin for us, the full weight of God's justice fell upon Him, ensuring that for all who believe, their sins are completely atoned for. Thus, the sacrifice of Christ is irreplaceable in the scheme of redemption, affirming that salvation is found in Him alone.