Octavius Winslow emphasizes the profound significance of the blood of Jesus in his sermon 'It Is the Blood That Saves.' He explains that the blood represents the new covenant and is essential for atonement, offering forgiveness and healing to sinners. Winslow highlights that faith is necessary to access the saving power of Christ's blood, which must be applied to the conscience for true salvation. He reassures believers that the blood sanctifies, empowers prayer, and ultimately saves from condemnation, leading to eternal life. The sermon concludes with a celebration of the blood's worth and its role in making believers 'kings and priests unto God.'