Why is Christ's atonement central to the gospel?

The atonement of Christ is fundamental to the gospel as it signifies the sacrificial death of Jesus, which satisfies God's justice for sin. According to 1 Corinthians 15:3-4, Christ died for our sins in accordance with the Scriptures, establishing that His death was not only necessary but preordained by God for the redemption of His people. This atonement is what qualifies believers for eternal life and secures their standing before God. Understanding and embracing Christ's atoning work is essential for experiencing the full assurance of faith, as it underscores that salvation is achieved solely through Him and not through human merit.