What does the Bible say about Christ's appearance to put away sin?

Hebrews 9:26 states that Christ, in the end of the world, appeared once to put away sin by His sacrifice. Unlike the repeated sacrifices of the Old Testament, which could never take away sin, Christ's one sacrifice is sufficient for the redemption of His people. This emphasizes that His death fulfilled God's justice and effectively dealt with the sin of His people permanently, ensuring their innocence before God. Therefore, we can be assured that if Christ appeared to put away our sins, they are completely removed and will not be held against us.