Taking communion, which most people erroneously call "The Lord's Supper," means many different things to different people depending on the particular denomination to which they belong. For instance, the Roman Catholic Church teaches that the wafer they use as the "bread" represents the actual and physical body of our Savior, Yahushua. They call it the "host" as it is supposed to contain the physical body of our Savior as the "victim." That means that every time a member of that denomination partakes of communion they are sacrificing Yahushua all over again, quite contrary to scripture's declaration that He died ONCE for all. Several denominations closely related to the RCC retained that belief when they "parted" from the RCC in their "protesting." Other denominations have different beliefs in what the communion is all about and some even use leavened bread in its practice.
Scripture has much to say about the "taking of communion" as instituted by our Savior, Yahushua the Anointed. Unhappily very few people really read and/or pay attention to what scripture has to say and therefore go through their lives believing and practicing the error they are taught by their denominational preachers. The reason for and the purpose of communion. Origin of Communion:
Loukas (Luke) 22:13-20 And they went and found it just as He had said to them and they prepared the Passover. 14 And when the hour had come, He reclined at the table, and the twelve apostles with Him. 15 And He said to them, "With longing I have desired to eat this Passover with you before I suffer, 16 for I say to you, I will no longer eat of it until it is fulfilled in the kingdom of Yahuwah." 17 Then He took the cup, and gave thanks, and said, "Take this and divide it among yourselves, 18 for I say to you I will not drink of the brood of the vine until the kingdom of Yahuwah comes." 19 And He took bread, gave thanks and broke, and gave it to them saying, "This is My body that is given for you. Do this in remembrance of Me." 20 Likewise He also took the cup after supper saying, "This cup is the new covenant in My blood that is poured out for you.
Yahushua was killed as the "Passover Lamb" for the world, and that could not occur until the 14th day of the first month at evening. So even though the occasion of this meal was said to be Passover, it was probably the traditional Seder meal that was and is still traditionally eaten the by the Orthodox Yahudiym the day before the actual Passover meal prescribed in Shemot (Exodus) 12. Also take note that these meals required that the bread be unleavened, and to eat anything leavened at these meals was and is a direct violation of the command of Yahuwah.
Yahushua foretold of this communion before His death.
Yahuchanan (John) 6:53-59 Then Yahushua said to them, "Most assuredly I say to you, unless you eat the flesh of the Son of Man and drink His blood, you have no life in you. 54 Whoever eats My flesh and drinks My blood has everlasting life, and I will raise him up at the last day. 55 For My flesh is food indeed and My blood is drink indeed. 56 He who eats My flesh and drinks My blood abides in Me and I in him. 57 As the living Father sent Me, and I live because of the Father, so he who feeds on Me will live because of Me. 58 This is the bread that came down from the sky, not as your fathers ate the mawn and are dead. He who eats this bread will live forever." 59 These things He said in the gathering as He taught in Kaphar Nachuwm.
Many of His disciples could not assimilate the idea and went away from Him.
Yahuchanan 6:60-66 Therefore many of His disciples when they heard this said, "This is a hard saying. Who can understand it?" 61 When Yahushua knew in Himself that His disciples complained about this, He said to them, "Does this offend you? 62 What then if you should see the Son of Man ascend where He was before? 63 It is the Spirit who gives life. The flesh profits nothing. The words that I speak to you are spirit and are life. 64 But there are some of you who do not believe." For Yahushua knew from the beginning who they were who did not believe and who would betray Him. 65 And He said, "Therefore I have said to you that no one can come to Me unless it has been granted to him by My Father." 66 From that time many of His disciples went back and walked with Him no more.
So the communion was instituted by Yahushua Himself before His death. That we are supposed to continue its observance today is shown by Sha'uwl (Paul) in his first letter to the Korinthios:
1 Korinthios (Corinthians) 11:23-26 For I received from the Master that which I also delivered to you, that the Master Yahushua on the night in which He was betrayed took bread 24 and when He had given thanks, He broke and said, "Take. Eat. This is My body that is broken for you. Do this in remembrance of Me." 25 And likewise took the cup after He had supped saying, "This cup is the new covenant in My blood. This do, as often as you drink, in remembrance of Me." 26 For as often as you eat this bread and drink this cup you proclaim the Master's death till He comes.
Not everybody that partakes of this communion today is a member of the body of Yahushua. Those that partake of it with any spirit but in total obedience to Yahuwah and His word set themselves up for disaster. Yahushua, and therefore His Father Yahuwah, do not look kindly on anyone partaking of this communion in a manner not totally in accordance with the spirit in which it is intended. Even those in the body must be right in their conscience prior to taking it.
1 Korinthios (Corinthians) 11:27-30 Therefore who whatsoever eats this bread or drinks of the cup of the Master in an unworthy manner will be guilty of the body and blood of the Master. 28 But let a man examine himself and so let him eat of the bread and drink of the cup. 29 For he who eats and drinks in an unworthy manner eats and drinks judgment to himself, not discerning the Master's body. 30 For this reason many are weak and sick among you and many are asleep.
1 Korinthios 10:16-17 The cup of blessing that we bless, is it not the communion of the blood of the Anointed? The bread that we break, is it not the communion of the body of the Anointed? 17 For we, though many, are one bread and one body, for we all partake of that one bread.
What we need to know about communion:
Being in communion with someone or something is defined as being in a state of intimate, heightened sensitivity, and receptivity with that person or thing. In the act of "taking communion" we are "communing" with our Savior within that stated definition. This taking of communion is a personal observance that is done by you in order to remember and think on the death of Yahushua until He returns. It will remind you of the sacrifice that He made for you because of His love for you, even though you were not worthy of that love or the sacrifice. It should put you in the state of mind to contemplate the love you have for Him as your Savior and of keeping your focus on Him and not the world. Nobody is required to "administer" communion as you see being done in the various denominations, and especially those of catholic origin, and in fact since communion is a personal and internal state of intimacy with Yahushua no human being is qualified to "administer" it to you. It is your observance, and you can take it by yourself or in the company of others as you choose. The items involved are unleavened bread (matzos, which you can make yourself or buy at a local grocery store) and red wine (or grape juice if you prefer) and it does not take much of either.
Most people erroneously believe that communion is some sort of "church ordinance" or something of that nature, but as you can see from the above it is not. It is strictly between you and Yahushua. The phrase "as often as you eat this bread and drink this cup" is indicative that it is not to be a ritualistic type of event but can be taken at a time of your choosing, whether that time frame is daily, weekly, annually, or some other time frame. I personally take it every shabbath, but I am an old man and need some kind of crutch to remember to do things, and shabbath fulfills that need quite well.