Joh 6:54  Whoever partakes of My flesh and drinks My blood has eternal life, and I will raise him up at the last day.

Christ instigated the new testament symbols of his body, the night before he was crucified.

Mat 26:26  And as they were eating, Jesus took bread, and blessed it, and broke it, and gave it to the disciples, and said, Take, eat; this is my body. 

Mar 14:22  And as they did eat, Jesus took bread, and blessed, and broke it, and gave to them, and said, Take, eat: this is my body. 

The bread symbolizes the body of Christ, which was broken for us. 

1Co 11:24  And when he had given thanks, he broke it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me.
1Co 11:26  For "as often as you eat this bread and drink this cup, you show" the Lord's death until He shall come.

Christ suffered voluntarily. 

Luk 22:19  And he took bread, and gave thanks, and broke it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me.

Isaiah 53 gives insight into the suffering of Christ.

Isa 53:1  Who has believed our report? And to whom is the arm of Jehovah revealed?
Isa 53:2  For He comes up before Him as a tender plant, and as a root out of a dry ground; He has no form nor majesty that we should see Him, nor an appearance that we should desire Him.
Isa 53:3  He is despised and rejected of men; a Man of sorrows, and acquainted with grief; and as it were a hiding of faces from Him, He being despised, and we esteemed Him not. 

Christ suffered terribly for our griefs, sorrows, transgressions, and iniquities. He was chastised that we might have peace; he was beaten that we might be healed. Christ was beaten for the iniquities of every person ever born.

Isa 53:4  Surely He has borne our griefs, and carried our sorrows; yet we esteemed Him stricken, smitten of God, and afflicted.
Isa 53:5  But He was wounded for our transgressions; He was bruised for our iniquities; the chastisement of our peace was on Him; and with His stripes we ourselves are healed.
Isa 53:6  All we like sheep have gone astray; we have turned, each one to his own way; and Jehovah has laid on Him the iniquity of us all. 

Christ suffered and died for our transgressions.

Isa 53:7  He was oppressed, and He was afflicted; yet He opened not His mouth. He is brought as a lamb to the slaughter; and as a sheep before its shearers is dumb, so He opened not His mouth.
Isa 53:8  He was taken from prison and from judgment; and who shall declare His generation? For He was cut off out of the land of the living; for the transgression of My people He was stricken. 

Christ is the true bread from heaven.

Joh 6:32  Then Jesus said to them, Truly, truly, I say to you, Moses did not give you that bread from Heaven, but My Father gives you the true bread from Heaven.
Joh 6:33  For the bread of God is He who comes down from Heaven and gives life to the world.

Joh 6:35  And Jesus said to them, I am the bread of life. He who comes to Me shall never hunger, and he who believes on Me shall never thirst.
Joh 6:47  Truly, truly, I say to you, He who believes on Me has everlasting life.
Joh 6:48  I am that bread of life. 
Joh 6:50  This is the Bread which comes down from Heaven, so that a man may eat of it and not die.

Joh 6:53  Then Jesus says to them, Truly, truly, I say to you, Unless you eat the flesh of the Son of Man, and drink His blood, you do not have life in yourselves. 

Joh 6:54  Whoever partakes of My flesh and drinks My blood has eternal life, and I will raise him up at the last day.

Joh 6:55  For my flesh is meat indeed, and my blood is drink indeed.

To correctly eat the body of Christ, means to live our lives by Christ’s example.

Joh 6:57  As the living Father has sent Me, and I live through the Father, so he who partakes of Me, even he shall live by Me.
Joh 6:58  This is the Bread which came down from Heaven, not as your fathers ate the manna, and died; he who partakes of this Bread shall live forever.

Jer 15:16  Your Words were found, and I ate them; and Your Word was to me the joy and gladness of my heart; for I am called by Your name, O Jehovah, the God of Hosts. 

We are also required to drink the wine signifying Christ’s blood.

Luk 22:20  Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you. 

Christ’s blood ratified the new covenant.

Mat 26:27  And he took the cup, and gave thanks, and gave it to them, saying, Drink  all of it; 
Mat 26:28  For this is my blood of the new testament, which is shed for many for the remission of sins. 

Mar 14:23  And he took the cup, and when he had given thanks, he gave it to them: and they all drank of it. 
Mar 14:24  And he said unto them, This is my blood of the new testament, which is shed for many.

1Co 11:25  In the same way He took the cup also, after supping, saying, "This cup is the New Covenant in My blood; as often as you drink it, do this in remembrance of Me." 

Christ’s death obtains redemption for our sins.

Heb 9:11  But Christ being come a high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building; 
Heb 9:12  Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us. 
Heb 9:14  How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God? 
Heb 9:15  And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance. 
Heb 9:16  For where a testament is, there must also of necessity be the death of the testator.

We are redeemed from sin with the precious blood of Christ.

1Pe 1:18  knowing that you were not redeemed with corruptible things, silver or gold, from your vain manner of life handed down from your fathers,
1Pe 1:19  but with the precious blood of Christ, as of a lamb without blemish and without spot; 

Christ’s death gives us redemption from our sins and also makes the new covenant available.

Heb 10:16  "This is the covenant that I will make with them after those days, says the Lord; I will put My Laws into their hearts, and in their minds I will write them," 

The Passover ceremony is a memorial of Christ’s death.

1Co 11:26  For "as often as you eat this bread and drink this cup, you show" the Lord's death until He shall come. 

Eating the bread.

[1] Christ bears our griefs and sorrows.

[2] Christ suffered for our transgressions and iniquities.

[3] We can have peace.

[4] We are healed.

[5] We live our life by Christ’s example.

Drinking the wine.

[1] We have remission of sins.

[2] The new covenant is available to us.

We must examine ourselves so we can take the Passover in a correct attitude.

1Co 11:26  For "as often as you eat this bread and drink this cup, you show" the Lord's death until He shall come.
1Co 11:27  So that whoever shall eat this bread and drink this cup of the Lord unworthily, he will be guilty of the body and blood of the Lord.
1Co 11:28  But let a man examine himself, and so let him eat of that bread and drink of that cup.
1Co 11:29  For he who eats and drinks unworthily eats and drinks condemnation to himself, not discerning the Lord's body. 

There is no other way to eternal life in Gods kingdom.

Joh 14:6  Jesus said to him, I am the Way, the Truth, and the Life; no one comes to the Father but by Me.