For I received from the Lord Himself that which I passed on to you [it was given to me personally], that the Lord Jesus on the night when He was treacherously delivered up and while His betrayal was in progress took bread, And when He had given thanks, He broke [it] and said, Take, eat. This is My body, which is broken for you. Do this to call Me [affectionately] to remembrance. Similarly when supper was ended, He took the cup also, saying, This cup is the new covenant [ratified and established] in My blood. Do this, as often as you drink [it], to call Me [affectionately] to remembrance. For every time you eat this bread and drink this cup, you are representing and signifying and proclaiming the fact of the Lord’s death until He comes [again]. So then whoever eats the bread or drinks the cup of the Lord in a way that is unworthy [of Him] will be guilty of [profaning and sinning against] the body and blood of the Lord. Let a man [thoroughly] examine himself, and [only when he has done] so should he eat of the bread and drink of the cup. For anyone who eats and drinks without discriminating and recognizing with due appreciation that [it is Christ’s] body, eats and drinks a sentence (a verdict of judgment) upon himself. That [careless and unworthy participation] is the reason many of you are weak and sickly, and quite enough of you have fallen into the sleep of death. For if we searchingly examined ourselves [detecting our shortcomings and recognizing our own condition], we should not be judged and penalty decreed [by the divine judgment]. But when we [fall short and] are judged by the Lord, we are disciplined and chastened, so that we may not [finally] be condemned [to eternal punishment along] with the world.
I Corinthians 11:23-32

And when the hour came, [Jesus] reclined at table, and the apostles with Him. And He said to them, I have earnestly and intensely desired to eat this Passover with you before I suffer; For I say to you, I shall eat it no more until it is fulfilled in the kingdom of God. And He took a cup, and when He had given thanks, He said, Take this and divide and distribute it among yourselves; For I say to you that from now on I shall not drink of the fruit of the vine at all until the kingdom of God comes. Then He took a loaf [of bread], and when He had given thanks, He broke [it] and gave it to them saying, This is My body which is given for you; do this in remembrance of Me. And in like manner, He took the cup after supper, saying, This cup is the new testament or covenant [ratified] in My blood, which is shed (poured out) for you.
Luke 22:14-20

Now as they were eating, Jesus took bread and, praising God, gave thanks and asked Him to bless it to their use, and when He had broken it, He gave it to the disciples and said, Take, eat; this is My body. And He took a cup, and when He had given thanks, He gave it to them, saying, Drink of it, all of you; For this is My blood of the new covenant, which [ratifies the agreement and] is being poured out for many for the forgiveness of sins. I say to you, I shall not drink again of this fruit of the vine until that day when I drink it with you new and of superior quality in My Father’s kingdom. And when they had sung a hymn, they went out to the Mount of Olives.
Matthew 26:26-30