Communion represents oneness with our Lord Jesus Christ.   

The purpose of Communion is to remember what our Lord accomplished for us in his suffering, death and resurrection.   

As we consider His broken body and His shed blood we fellowship with Him in His sufferings being reminded that our Old Man was crucified with Him and our New Spirit rose with Him.   

The greatest discernment we can have of the broken body and shed blood is not so much in the suffering but in the victory it represented for us who are no longer condemned but made like Him through His Holy Spirit.   
The cup of blessing which we bless, is it not the communion of the blood of Christ?     The bread which we break, is it not the communion of the body of Christ?
The communion is all about discerning the implications and power of the broken body and spill blood of the Lord Himself in Christ Jesus.

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.
The communion is symbolic of Christ being in us and we being In Christ.     The Holy Spirit ( Christ) is our Saviour and healer.

And he took the cup, and gave thanks, and gave it to them, saying, Drink you all of it;
oneness with Christ is His goal for us.     It requires us to receive all of Him.

For this is my blood of the new testament, which is shed for many for the remission of sins.
forgiveness of sins is by His shed blood.

For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread:
Paul begins to clarify the origin of communion and its spiritual meaning.

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.
The remembrance of what Christ did for us is critical for keeping us oriented in Him.     

Understanding that Christ's body was broken for our healing produces faith to be healed.

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 you, as often as you drink it, in remembrance of me.
Remembering that Jesus shed His blood for our reconciliation to the Lord keeps us oriented in Him.     

Understanding that it is in His shed blood that we are redeemed and given Eternal Life produces faith that it is so.

For as often as you eat this bread, and drink this cup, you do show the Lord's death till he come.
communion is a testimony to the historical event of His crucifixion and to the future event of Him returning in His resurrected body,.

Wherefore whoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
To not appreciate what Christ has done makes one unworthy of Him.

But let a man examine himself, and so let him eat of that bread, and drink of that cup.
We examine ourselve by seeing ourselves as were once we were without Him, and seeing ourselves as we now are In Christ.

For he that eats and drinks unworthily, eats and drinks damnation to himself, not discerning the Lord's body.
It is in our awareness of Christ Jesus' work on our behalf that we are saved and healed.     Not being aware of His finished work leaves us vulnerable to the ravages of unbelief.

For this cause many are weak and sickly among you, and many sleep.
The weakness and sickness is of our own doing by not discerning the importance and power of the broken body, shed blood of our risen Lord.     

It is in the discernment of His work that we are healed and saved and victorious.

For if we would judge ourselves, we should not be judged.
Being unconcned, slack and inattentive is death.     Being connected to Christ is life.

But when we are judged, we are chastened of the Lord, that we should not be condemned with the world.
The Word Of The Lord effects the will of the Lord.     If we abide in it, we experience life.     If we violate it, we are broken by it.

Wherefore, my brothers, when you come together to eat, tarry one for another.
communion should be conducted decently and in order with courtesy and reverence for what it represents.

And if any man hunger, let him eat at home; that you come not together unto condemnation.     And the rest will I set in order when I come.
communion is not design to satisfy physical hunger, rather to satisfy our need for Christ.