Blood was a big deal in the Old Covenant which came by way of Moses. The entire law and everything that came with it was dedicated with blood. It turns out it was just symbolic for something far superior that would come later—the blood of Jesus. The writer of Hebrews points out the contrasts in how the first covenant was incapable of bringing what the people needed. The New Covenant established with the blood of Jesus would remedy everything necessary that the first covenant could not. And it would be available for the entire world.
