How do we know that Christ's redemption is complete?

The certainty of Christ's finished redemption is rooted in the biblical narrative and confidence in His character. The prophetic scriptures point to His role as the Redeemer, with Isaiah 53 illustrating His suffering for our transgressions and the fulfillment of the law confirmed by His declaration. Furthermore, in Hebrews 10:14, it is written that by one sacrifice, He has made perfect forever those who are being made holy. Thus, the historic and sovereign work of Christ is validated by Scripture, underscoring that He has completed the necessary steps for salvation, emphasizing that no further actions are required by believers to secure their redemption.