Blood Given for Atonement
Where this fits in the story: Genesis 9:1–7 — preserved existing connection 272. Blood is bound to creaturely life before Sinai.
Where Scripture takes it next: Hebrews 9:18–22 — very strong inspired development of blood, purification, covenant, and forgiveness under the law.
Evidence boundary: YHWH gives/assigns blood for the altar; the text does not teach magical power intrinsic to blood. The phrase explaining how blood makes atonement has real grammatical/theological debate.