Matthew 26:28 NIV

Exodus 24:7-8 NIV
Then he took the Book of the Covenant and read it to the people. They responded, “We will do everything the Lord has said; we will obey.” Moses then took the blood, sprinkled it on the people and said, “This is the blood of the covenant that the Lord has made with you in accordance with all these words.”

Leviticus 17:11 NIV
For the life of a creature is in the blood, and I have given it to you to make atonement for yourselves on the altar; it is the blood that makes atonement for one’s life.

Matthew 20:28 NIV
just as the Son of Man did not come to be served, but to serve, and to give his life as a ransom for many.”