According to Acts 2 the Jews, the followers of Y'shua, met daily (v 46) continuing with one mind in the Temple (this would be the Temple in Jerusalem - these men and women were Jews not Baptists, Prebys, Methodist, Catholics or any of the other denominations that came in following centuries to exclude Jews), and breaking bread from house to house, they were taking their meals together with gladness and sincerity of heart.
What has become known as the Last Supper was, when Y'shua and his followers celebrated it, The Feast of Pesach (unleaven bread). Leaven, from Y'shua's teachings, represented sin. The Jews were to clean their house (literally and spiritually), as in their hearts, of sins to partake of the Feast which celebrated their deliverance by YHVH from being slaves in Egypt.
Placed on the table, as to this day, a wine cup and unleaven bread. The head of the household, just as Y'shua practiced His entire life and as host of His last Feast of Pesach, lifted the wine and blessed the wine and table: "Blessed art Thou, O Lord our God, King of the universe, who has granted us life, sustained us and permitted us to celebrate this joyful festival." Then, He would have said prayer: "Let us praise God with this symbol of joy and thank Him for the blessings which this Feast of Pesach brings to us. Our hearts are stirred by memories of deliverance of our forefathers from Egypt. The unleavened bread reminds us of the hardships they endured to remain steadfast to the service of God. May their example teach us fortitude and lead us through noble living to the service of the Eternal God."
He would have then blessed the wine: "Praised art Thou, O Lord our God, King of the universe, who has created the fruit of the vine." The wine cup would be passed round the table and each in turn would drink (which always symbolizes covenant relationship). He then would have broken the bread, dipped it in the salt, and blessed it: "Praised art Thou, O Lord our God, King of the universe, who causes the earth to yield food for all." Each one at the table would likewise partake of the bread and salt. The Pesach Service would have been conducted. Then the meal would be served.
According to the Gospels, Y'shua then, while they were eating, Y'shua took some bread, blessed it, broke it and gave to His disciples, and said: "Take, eat; this is My body." Of course the Jews did not take this literally, because such a statement, in the literal sense, would have been a total aversion to Judiasm. Then He took the cup and gave thanks, and passed it saying: "Drink from it, all of you; for this is My blood of the covenant, which is poured out for many for forgiveness of sins." In Jewish culture, this did not mean that they were drinking His blood. Jewish culture held that the wine represented a blood covenant! Wine, as a legal seal, to all covenants represented that the people partaking of the cup of wine were in a blood covenant. Y'shua never would have insinuated that they were actually drinking His blood or eating His flesh - this was a total aversion to Jewish culture. For example, when two people (like Joseph and Mary) were betrothed, her father poured a cup of wine (he then would have called Mary into the room and offered her the cup first - if she took the cup, then she accepted the marriage - if she didn't then there was no marriage), the bride-to-be, the father and the bridegroom would, in turn, take the cup and drink. From that moment they were legally married - they were in covenant (this is why Joseph would have divorced Mary even though they had never been together - this would happen a year after betrothal). Wine always represented a blood covenant! Marriage is a blood covenant - it is not consummated without the blood; that is why some marriages on earth are legal by man's doctrines but not recognized in heaven. The bride was agreeing to be set apart for her bridegroom until he returned to take her to the bridal chamber (which he had to build for her; he would depart telling her "I go to build a chamber for you and I will return") and he could not return for her until his father said he could. His father had to approve the bridal chamber and decide the timing of the wedding (consummation). Then the bridegroom would go in the night and get his bride and take her into the chamber for 7 nights, emerging for the wedding celebration with their family and community.
Communion is a combination of the marriage covenant the celebration of the Festival of Pesach (Passover) when the Jews placed the blood of the lamb upon their doorposts and lintel so the angel of death would pass over. Y'shua is the lamb that takes away the sins of the world! (John 1:29), which by the way is one of the most amazing quotes in the Bible because the Jews had nothing to do with the world. Now, thank the LORD, it says the world and not a denomination or a race!
Every time you celebrate communion you are supposed to have cleansed your heart of leaven (sin); and when you partake of the cup and bread you are showing publicly that you are setting yourself apart, you are in a blood covenant, and you are waiting for your Bridegroom. You partake of the cup of wine to show that you are in blood covenant (not drinking blood).
Y'shua arose on The Feast of First Fruits, which happens to be today!
"They [the non-orthodox] do not confess that the Eucharist is the flesh of our Savior, Jesus Christ, flesh which suffered for our sins in which the Father in His goodness raised up again. They who deny the gift of God are perishing in their disputes." (Letter to the Smyrnaeans; 6:2–7:1; 110 AD)This is further underscored by the "Lord's supper" ritual mentioned in I Cor. It is not about Passover or a Jewish rite of unleavened bread. It's about the "Lord's supper". It occurs whenever the church gathers. It is an accurate summation of the Catholic liturgy of the Eucharist "after the order of Melchisedek".