How do we know Jesus' work on the cross was successful?

The success of Jesus' work on the cross is affirmed in John 19:30 where He proclaims, 'It is finished.' This statement indicates that He completed all that was required for the atonement of sin. His work included satisfying divine justice, fulfilling the law, and redeeming His people through His death. The theological implications of this are immense; by His shed blood, we are justified before God. Romans 5:9 confirms that we are justified by His blood. This means that our redemption is not merely a potential possibility but a historical reality accomplished through Jesus' death. Knowing that He did not attempt salvation but successfully completed it gives believers assurance of their standing before God.