How do we know Christ's work is sufficient for our salvation?

The sufficiency of Christ's work for our salvation is a cornerstone of Reformed theology. His life fulfilled the law perfectly, satisfying God's requirements on behalf of His people. His sacrificial death atoned for every sin of those whom He came to save, ensuring that God remembers those sins no more. Furthermore, His resurrection not only guarantees our justification but also signifies that He has conquered sin and death for us. The entirety of our hope rests on what Christ has accomplished, making His work sufficient and effective for salvation, enabling us to rejoice in the truth that He ever lives to intercede for us.