How do we know that only the blood of Christ redeems believers?

Biblical theology consistently emphasizes the blood of Christ as the means of redemption for God's people. In Revelation, it is noted that those before the throne have washed their robes in the blood of the Lamb, which serves as the basis for their salvation and acceptance before God. This doctrine is rooted in Old Testament sacrificial practices and is fulfilled in Christ's perfect sacrifice, portraying that without His shedding of blood, there is no forgiveness or redemption. Thus, only through His blood can we stand before God justified and declared righteous.