This can be stated in active and positive form. Alternate translation: "So God established even the first covenant with blood" (See: [[rc://en/ta/man/translate/figs-activepassive]] and [[rc://en/ta/man/translate/figs-doublenegatives]])
The death of animals sacrificed to God is spoken of as if it were nothing but blood. Alternate translation: "the death of animals sacrificed to God" (See: [[rc://en/ta/man/translate/figs-metonymy]])