The phrase "blood sacrifice" refers to a ritual or act where blood is offered or given, often as an offering to a higher power or to achieve a specific purpose. Full definition
How does blood sacrifice of one person have anything whatsoever to do with forgiveness, especially for other completely unrelated persons? (religion.blogs.cnn.com)
I'm just saying that there are many other Laws that have nothing to do with blood sacrifice that we don't follow anymore. (religion.blogs.cnn.com)