How do we know Christ's death puts away our sins?

The assurance that Christ's death puts away our sins is affirmed through His fulfillment of the law and the prophetic scriptures. Isaiah 64 reminds us that our righteousness is inadequate, and only through Christ's sacrifice can we attain forgiveness. His death serves dual purposes: taking the sting of death and sin, and establishing peace between God and sinners. We are called to believe this truth as central to the gospel of grace, recognizing that it is not by our works but by His sacrifice that we are saved.