In the night in which Christ was betrayed, He took of bread and a cup to implement a reminder for all those who would come to salvation after His resurrection.
The cup of eulogy that we eulogize, is it not the sharing in common with the blood of the Christ? The bread that we break, is it not the sharing in common with the body of the Christ? – 1 Corinthians 10:16.
The Christ is the new creation God made, having raised Christ from the dead, in which Jesus is the head and the Church is the body.
So that since someone is in Christ, a new creation, old things have passed away, behold all things have become new – 2 Corinthians 5:17.
For just as the body is one and has many members, and all the members of the body, being many are one body, thus also is the Christ – 1 Corinthians 12:12.
and He put all things under His feet and gave to Him [the] head concerning all the Church, which is His body – Ephesians 1:22-23a.
When we partake in communion, it is a reminder that as part of the Church we are all in one body and under a new covenant. Therefore, we all have equality within the body of Christ and are to be treating each other accordingly, for we are all part of one. It is through this new creation (the Christ) that Jesus’ death and resurrection are imputed to us, and we are no longer condemned before God (Romans 8:1).
For I received from the Lord what I also handed over to you, that the lord Jesus in the night that He was betrayed took bread and having given thanks He broke it and said, “This is My body concerning you, do this in remembrance of Me”. – 1 Corinthians 11:23-24.
Likewise, also the cup after eating saying, “This cup is the new covenant by My blood. Do this as often as you drink in remembrance of Me.” – 1 Corinthians 11:25.
The taking of communion is an important reminder concerning how we are relating to other saints and the fact that we are under a new covenant. Are you treating saints as part of one body, not separating out the rich from the poor, clergy from the people, or any other division? Also, are we living according to the new covenant, a covenant of grace.
Through our Lord’s death and resurrection we are part of a new creation in which the sin nature residing in our flesh has been rendered ineffective, Satan cannot touch us, and the world system is indifferent to us, because we belong to God and are under a new covenant by which we can mature and live a life of freedom by using what God has given to us to work out His righteousness that we have in Christ.
For as often as we eat this bread and drink of this cup, we announce the death of the Lord until He comes.