Blood
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Atonement

“…and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul.”
Leviticus 17:11

“Behold, I say unto you, Nay, let us retain our swords that they be not stained with the blood of our brethren; for perhaps, if we should stain our swords again they can no more be washed bright through the blood of the Son of our great God, which shall be shed for the atonement of our sins.”
Alma 24:13

“For this is my blood of the new testament, which is shed for many for the remission of sins.”
Matthew 26:28

“Listen to him who is the advocate with the Father, who is pleading your cause before him—Saying: Father, behold the sufferings and death of him who did no sin, in whom thou wast well pleased; behold the blood of thy Son which was shed, the blood of him whom thou gavest that thyself might be glorified;”
D&C 45:3-4

See also Water, Wine, Cup

Life

“For the life of the flesh is in the blood:…”
Leviticus 17:11

“Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.”
John 6:54

Sacrament

“After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me.”
1 Corinthians 11:25

“And it came to pass that when he said these words, he commanded his disciples that they should take of the wine of the cup and drink of it, and that they should also give unto the multitude that they might drink of it. […] And this shall ye always do to those who repent and are baptized in my name; and ye shall do it in remembrance of my blood, which I have shed for you, that ye may witness unto the Father that ye do always remember me.”
3 Nephi 18:8,11

Sacrifice

“He slew also the bullock and the ram for a sacrifice of peace offerings, which was for the people: and Aaron’s sons presented unto him the blood, which he sprinkled upon the altar round about,”
Leviticus 9:18