How do we know Christ’s work of salvation is true?

We can trust in the truth of Christ's work of salvation because it is rooted in Scripture and fulfilled in His life. In Jeremiah 23:5-6, God promises to raise a 'righteous branch' from David, which applies to Christ. His perfect obedience to the law, His atoning sacrifice on the cross, and His victorious resurrection serve as clear evidence of His authority and capability to save. Moreover, the finished work of Christ guarantees that all of God's elect will be brought safely to salvation, as no true believer will be lost. When He declared 'It is finished,' He secured eternal salvation for His people, demonstrating that His work is complete and effective.