I'll use the NIV, as it's the first to pop up on the websites you mentioned (which are very nice, by the way).
Matthew 26:26-28 (New International Version)
New International Version (NIV)
Copyright © 1973, 1978, 1984 by International Bible Society
26While they were eating, Jesus took bread, gave thanks and broke it, and gave it to his disciples, saying, "Take and eat; this is my body."
27Then he took the cup, gave thanks and offered it to them, saying, "Drink from it, all of you. 28This is my blood of the[a] covenant, which is poured out for many for the forgiveness of sins.
Mark 14:22-24 (New International Version)
New International Version (NIV)
22While they were eating, Jesus took bread, gave thanks and broke it, and gave it to his disciples, saying, "Take it; this is my body."
23Then he took the cup, gave thanks and offered it to them, and they all drank from it.
24"This is my blood of the[a] covenant, which is poured out for many," he said to them.
Luke 22:19-20 (New International Version)
New International Version (NIV)
19And he took bread, gave thanks and broke it, and gave it to them, saying, "This is my body given for you; do this in remembrance of me."
20In the same way, after the supper he took the cup, saying, "This cup is the new covenant in my blood, which is poured out for you
John 6:47-66 (New International Version)
New International Version (NIV)
47I tell you the truth, he who believes has everlasting life. 48I am the bread of life. 49Your forefathers ate the manna in the desert, yet they died. 50But here is the bread that comes down from heaven, which a man may eat and not die. 51I am the living bread that came down from heaven. If anyone eats of this bread, he will live forever. This bread is my flesh, which I will give for the life of the world."
52Then the Jews began to argue sharply among themselves, "How can this man give us his flesh to eat?"
53Jesus said to them, "I tell you the truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. 54Whoever eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. 55For my flesh is real food and my blood is real drink. 56Whoever eats my flesh and drinks my blood remains in me, and I in him. 57Just as the living Father sent me and I live because of the Father, so the one who feeds on me will live because of me. 58This is the bread that came down from heaven. Your forefathers ate manna and died, but he who feeds on this bread will live forever." 59He said this while teaching in the synagogue in Capernaum.
Many Disciples Desert Jesus
60On hearing it, many of his disciples said, "This is a hard teaching. Who can accept it?"
61Aware that his disciples were grumbling about this, Jesus said to them, "Does this offend you? 62What if you see the Son of Man ascend to where he was before! 63The Spirit gives life; the flesh counts for nothing. The words I have spoken to you are spirit[a] and they are life. 64Yet there are some of you who do not believe." For Jesus had known from the beginning which of them did not believe and who would betray him. 65He went on to say, "This is why I told you that no one can come to me unless the Father has enabled him."
66From this time many of his disciples turned back and no longer followed him.
1 Corinthians 10:16 (New International Version)
New International Version (NIV)
Copyright © 1973, 1978, 1984 by International Bible Society
16Is not the cup of thanksgiving for which we give thanks a participation in the blood of Christ? And is not the bread that we break a participation in the body of Christ?