The Lord's Supper is the meal Jesus gave His church in memory of Him: the bread and the cup proclaim His death until He comes, and believers share it in faith, examining themselves, receiving Christ, and renewing communion with Him and with one another.
Not a summary of these passages: the passages themselves. Read them, then come back to the study below.
The study
What the Scripture says
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Jesus instituted it at the Last Supper
He took bread, and when he had given thanks, he broke it, and gave to them, saying, 'This is my body which is given for you. Do this in memory of me.' Likewise, he took the cup after supper, saying, 'This cup is the new covenant in my blood, which is poured out for you.' It is His gift to the church, given the night He was betrayed.
He took bread, and when he had given thanks, he broke it, and gave to them, saying, “This is my body which is given for you. Do this in memory of me.” Likewise, he took the cup after supper, saying, “This cup is the new covenant in my blood, which is poured out for you.And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me. Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you.
As they were eating, Jesus took bread, gave thanks for it, and broke it. He gave to the disciples, and said, “Take, eat; this is my body.” He took the cup, gave thanks, and gave to them, saying, “All of you drink it, for this is my blood of the new covenant, which is poured out for many for the remission of sins.And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body. And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; For this is my blood of the new testament, which is shed for many for the remission of sins.
'As often as you eat this bread and drink this cup, you proclaim the Lord's death until he comes.' It is a sermon in bread and wine, declaring the cross to ourselves, to the church, and to the watching world.
For as often as you eat this bread and drink this cup, you proclaim the Lord’s death until he comes.For as often as ye eat this bread, and drink this cup, ye do shew the Lord’s death till he come.
For I received from the Lord that which also I delivered to you, that the Lord Jesus on the night in which he was betrayed took bread. When he had given thanks, he broke it, and said, “Take, eat. This is my body, which is broken for you. Do this in memory of me.” In the same way he also took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink, in memory of me.”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: And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. 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 ye, as oft as ye drink it, in remembrance of me.
'Therefore whoever eats this bread or drinks the Lord's cup in a way unworthy of the Lord will be guilty of the body and the blood of the Lord. But let a man examine himself, and so let him eat of the bread, and drink of the cup.' We come repentant, not perfect, but honest.
Therefore whoever eats this bread or drinks the Lord’s cup in a way unworthy of the Lord will be guilty of the body and the blood of the Lord. But let a man examine himself, and so let him eat of the bread, and drink of the cup. For he who eats and drinks in an unworthy way eats and drinks judgment to himself, if he doesn’t discern the Lord’s body.Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of that bread, and drink of that cup. For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord’s body.
'The cup of blessing which we bless, isn't it a sharing of the blood of Christ? The bread which we break, isn't it a sharing of the body of Christ? Because there is one loaf of bread, we, who are many, are one body; for we all partake of the one loaf of bread.' It is a family meal around the one Table.
The cup of blessing which we bless, isn’t it a sharing of the blood of Christ? The bread which we break, isn’t it a sharing of the body of Christ? Because there is one loaf of bread, we, who are many, are one body; for we all partake of the one loaf of bread.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? For we being many are one bread, and one body: for we are all partakers of that one bread.
They continued steadfastly in the apostles’ teaching and fellowship, in the breaking of bread, and prayer.And they continued stedfastly in the apostles’ doctrine and fellowship, and in breaking of bread, and in prayers.
For I received from the Lord that which also I delivered to you, that the Lord Jesus on the night in which he was betrayed took bread. When he had given thanks, he broke it, and said, “Take, eat. This is my body, which is broken for you. Do this in memory of me.” In the same way he also took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink, in memory of me.” For as often as you eat this bread and drink this cup, you proclaim the Lord’s death until he comes.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: And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. 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 ye, as oft as ye drink it, in remembrance of me. For as often as ye eat this bread, and drink this cup, ye do shew the Lord’s death till he come.
He took bread, and when he had given thanks, he broke it, and gave to them, saying, “This is my body which is given for you. Do this in memory of me.” Likewise, he took the cup after supper, saying, “This cup is the new covenant in my blood, which is poured out for you.And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me. Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you.
But let a man examine himself, and so let him eat of the bread, and drink of the cup.But let a man examine himself, and so let him eat of that bread, and drink of that cup.