Hebrews 9:17-19

Complete Jewish Bible

¹⁷ since a will goes into effect only upon death; it never has force while its maker is still alive.

¹⁸ This is why the first covenant too was inaugurated with blood. ¹⁹ After Moshe had proclaimed every command of the Torah to all the people, he took the blood of the calves with some water and used scarlet wool and hyssop to sprinkle both the scroll itself and all the people;