Leviticus 17:14
For it is the life of all flesh; the blood of it is for the life thereof: therefore I said unto the children of Israel, Ye shall eat the blood of no manner of flesh: for the life of all flesh is the blood thereof: whosoever eateth it shall be cut off.
Cross-reference
Leviticus 17:11 provides the theological basis — blood makes atonement on the altar — which underlies the prohibition in verse 14 against eating blood.
Leviticus 17:12 states the same prohibition against eating blood, which verse 14 reinforces with the same command and the reasoning about life in blood.
Leviticus 17:4 also imposes being cut off for misuse of blood — both in the same chapter link blood and cut off.
Genesis 9:4 is the original prohibition of eating blood given to Noah, which Leviticus 17:14 reiterates for Israel under the Mosaic covenant.
Deuteronomy 12:23 repeats the same prohibition and reasoning — blood is life, do not eat it — directly paralleling Leviticus 17:14.
Acts 15:29 includes abstaining from blood in the apostolic decree — directly applying this OT blood prohibition in the new covenant.