Matthew 26:26-28 (NABRE):

While they were eating, Jesus took bread, said the blessing, broke it, and giving it to his disciples said, “Take and eat; this is my body.” Then he took a cup, gave thanks, and gave it to them, saying, “Drink from it, all of you, for this is my blood of the covenant, which will be shed on behalf of many for the forgiveness of sins.

John 6:33-59 (NABRE):

For the bread of God is that which comes down from heaven and gives life to the world.”

So they said to him, “Sir, give us this bread always.” Jesus said to them, “I am the bread of life; whoever comes to me will never hunger, and whoever believes in me will never thirst. But I told you that although you have seen [me], you do not believe. Everything that the Father gives me will come to me, and I will not reject anyone who comes to me, because I came down from heaven not to do my own will but the will of the one who sent me. And this is the will of the one who sent me, that I should not lose anything of what he gave me, but that I should raise it [on] the last day. For this is the will of my Father, that everyone who sees the Son and believes in him may have eternal life, and I shall raise him [on] the last day.”

The Jews murmured about him because he said, “I am the bread that came down from heaven,” and they said, “Is this not Jesus, the son of Joseph? Do we not know his father and mother? Then how can he say, ‘I have come down from heaven’?” Jesus answered and said to them, “Stop murmuring among yourselves. No one can come to me unless the Father who sent me draw him, and I will raise him on the last day. It is written in the prophets:

‘They shall all be taught by God.’

Everyone who listens to my Father and learns from him comes to me. Not that anyone has seen the Father except the one who is from God; he has seen the Father. Amen, amen, I say to you, whoever believes has eternal life. I am the bread of life. Your ancestors ate the manna in the desert, but they died; this is the bread that comes down from heaven so that one may eat it and not die. I am the living bread that came down from heaven; whoever eats this bread will live forever; and the bread that I will give is my flesh for the life of the world.”

The Jews quarreled among themselves, saying, “How can this man give us [his] flesh to eat?” Jesus said to them, “Amen, amen, I say to you, unless you eat the flesh of the Son of Man and drink his blood, you do not have life within you. Whoever eats my flesh and drinks my blood has eternal life, and I will raise him on the last day. 55 For my flesh is true food, and my blood is true drink. 56 Whoever eats my flesh and drinks my blood remains in me and I in him. 57 Just as the living Father sent me and I have life because of the Father, so also the one who feeds on me will have life because of me. 58 This is the bread that came down from heaven. Unlike your ancestors who ate and still died, whoever eats this bread will live forever.” 59 These things he said while teaching in the synagogue in Capernaum.