How do we know the efficacy of His blood is true?

The effectiveness of Christ's blood is firmly established in scripture, particularly in the New Testament. In Hebrews 9:24, it is stated that Christ entered into heaven itself to appear before God on our behalf, signifying that His sacrifice was accepted and sufficient. Romans 5:9 reinforces this truth, asserting that we are justified by His blood and saved from wrath through Him. Moreover, as discussed in the sermon, the concept of 'much more' illustrates how the grace of God and the efficacy of Christ's sacrifice transcend the limitations of the Old Testament sacrifices. Therefore, we can be assured of the efficacy of His blood based on God's promises and the redemptive work of Christ.