How do we know that Christ's atonement covers all sin?

The assurance of Christ’s complete atonement is found in 1 John 1:7, which states, 'The blood of Jesus Christ, His Son, cleanseth us from all sin.' This verse highlights the totality of His sacrifice, emphasizing that through Christ's shed blood, all sins of His people are fully paid for. The depth of this blessing is profound and reflects God’s grace and mercy. It underlines the significance of the cross, where Jesus bore the sins of His people, thus guaranteeing their righteousness before God. This truth frees believers from the bondage of sin, providing confidence in their standing before a holy God.