Leviticus 17:11
11 For fthe life of the flesh is in the blood, and I have given it for you on the altar to make atonement for your souls, for git is the blood hthat makes atonement by the life.
Hebrews 9:22
22 Indeed, under the law almost everything is purified with blood, and awithout the shedding of blood there is no forgiveness of sins.