Why is understanding Christ's finished work important?

The finished work of Christ is paramount in sovereign grace theology as it guarantees that salvation is entirely based on His righteousness, not our own. In Revelation 5, the Lamb that was slain signifies the complete and perfect sacrifice that satisfies God's justice for our sins. Recognizing the significance of His work helps believers rest in the assurance that our salvation is secure, as it was accomplished entirely by Christ on our behalf. It also compels us to worship Him, acknowledging that our faith rests upon His sufficient grace rather than our efforts.