Christ's sinlessness is vital to the biblical understanding of redemption. If Jesus is to be our mediator, if He is to be our redeemer, it's essential that He be sinless. How could His atoning life have any significance if He committed even one sin? He's called the lamb without blemish because His perfection is integral to His redemptive role as the mediator who offers up a perfect sacrifice to the Father to fulfill the old covenant and satisfy the wrath of God. The sinlessness of Jesus is critical to the full biblical understanding of His sacrificial death. Not only does Christ take what should be ours—namely, punishment for sin—but through imputation He gives to those who are in Him by faith alone the inheritance He receives for His perfect obedience (Rom. 3:21–26).