How do we know Jesus was faithful in His atoning work?

The faithfulness of Christ in His atoning work is evidenced through His willingness to endure immense suffering for the sake of His people. According to the article, Jesus faced trials from men, devils, and God Himself, yet He remained steadfast. His agony in the garden and the suffering He endured on the cross, including the separation from the Father, showcases His total commitment to completing the salvation of the elect.

The Apostolic witness to this faithfulness assures us that Jesus did not abandon His cause. Even in His final moments, He was focused on fulfilling the Father's will, declaring, 'It is finished' before giving up His spirit. Thus, His faithfulness is confirmed not only in Scripture but also through the lens of the historic Reformed faith, which asserts that His work fully satisfied the demands of holiness and justice.