When some people asked Jesus from where he came, “Jesus answered them, ‘Truly, truly, I say to you, you seek me, not because you saw signs, but because you ate your fill of the loaves. Do not labor for the food which perishes, but for the food which endures to eternal life, which the Son of man will give to you; for on him has God the Father set his seal." Then they said to him, "What must we do, to be doing the works of God?"
“Jesus then said to them, ‘Truly, truly, I say to you, it was not Moses who gave you the bread from heaven; my Father gives you the true bread from heaven. For the bread of God is that which comes down from heaven and gives life to the world.’ They said to him, ‘Lord, give us this bread always.’ Jesus said to them, "I am the bread of life; he who comes to me shall not hunger, and he who believes in me shall never thirst. But I said to you that you have seen me and yet do not believe. All that the Father gives me will come to me; and him who comes to me I will not cast out. For I have come down from heaven, not to do my own will, but the will of him who sent me; and this is the will of him who sent me, that I should lose nothing of all that he has given me but raise it up at the last day. For this is the will of my Father, that everyone who sees the Son and believes in him should have eternal life; and I will raise him up at the last day.’"
“The Jews then murmured at him, because he said, ‘I am the bread which came down from heaven.’ They said, ‘Is not this Jesus, the son of Joseph, whose father and mother we know? How does he now say, `I have come down from heaven'?’"
“Jesus answered them, ‘Do not murmur among yourselves. No one can come to me unless the Father who sent me draws him; and I will raise him up at the last day. It is written in the prophets, `And they shall all be taught by God.' Everyone who has heard and learned from the Father comes to me. Not that anyone has seen the Father except him who is from God; he has seen the Father. Truly, truly, I say to you, he who believes has eternal life. I am the bread of life. Your fathers ate the manna in the wilderness, and they died. This is the bread which comes down from heaven that a man may eat of it and not die. I am the living bread which came down from heaven; if anyone eats of this bread, he will live forever; and the bread which I shall give for the life of the world is my flesh.’" The Jews then disputed among themselves, saying, ‘How can this man give us his flesh to eat?’"
“So, Jesus said to them, ‘Truly, truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you; he who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. For my flesh is food indeed, and my blood is drink indeed. He who eats my flesh and drinks my blood abides in me, and I in him. As the living Father sent me, and I live because of the Father, so he who eats me will live because of me. This is the bread which came down from heaven, not such as the fathers ate and died; he who eats this bread will live forever.’ This he said in the synagogue, as he taught at Capernaum.” (John 6:26-59)
When Jesus went to Lazarus, after he had died, Jesus spoke with Lazarus’ sister, Martha, concerning her brother. Jesus said to her, "Your brother will rise again." Martha said to him, "I know that he will rise again in the resurrection at the last day." Jesus said to her, "I am the resurrection and the life; he who believes in me, though he dies, yet shall he live, and whoever lives and believes in me shall never die. Do you believe this?" She said to him, "Yes, Lord; I believe that you are the Christ, the Son of God, he who is coming into the world." (John 11:23-27)
When Jesus had spoken these words, he lifted up his eyes to heaven and said, "Father, the hour has come; glorify thy Son that the Son may glorify thee, since thou hast given him power over all flesh, to give eternal life to all whom thou hast given him. And this is eternal life, that they know thee the only true God, and Jesus Christ whom thou hast sent. I glorified thee on earth, having accomplished the work which thou gave me to do; and now, Father, glorify thou me in thy own presence with the glory which I had with thee before the world was made.” (John 17:1-5)
Before he died, Jesus told his disciples, "Let not your hearts be troubled; believe in God, believe also in me. In my Father's house are many rooms; if it were not so, would I have told you that I go to prepare a place for you? And when I go and prepare a place for you, I will come again and will take you to myself, that where I am you may be also. And you know the way where I am going." (John 14: 1-4)