How do we know Jesus' work of redemption is successful?

The assurance of the success of Jesus' redemptive work is rooted in His own declaration in John 17, where He states that He has completed the work entrusted to Him by the Father. This underscores the certainty that He achieved His mission of salvation without failure. Moreover, the doctrine of propitiation reveals that Jesus' sacrifice satisfies the requirements of divine justice, making reconciliation with God possible for His elect. The Scriptures affirm that all whom Jesus came to save will ultimately receive the full benefits of His atoning sacrifice, thus ensuring that none of His efforts are in vain. Thus, His satisfaction is not an uncertain hope but a guaranteed result of His accomplished mission.