How do we know that Christ's atonement is sufficient for our salvation?

The sufficiency of Christ's atonement is affirmed by scripture, particularly in Hebrews 10:12, which states that Christ offered a single sacrifice for sins forever. This demonstrates that His death was not just an event, but a perfect fulfillment of God's plan for redemption. Matthew 20:28 reinforces this by declaring that Jesus came to give His life as a ransom for many, indicating that the atonement is effective for those whom God has given Him. Therefore, we can rest assured that His sacrifice satisfies divine justice, making it fully sufficient for the salvation of God's elect.