 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. These verses from John 6 are very clear. Jesus is the bread of life. This is strong biblical evidence of what we believe as Catholics, that the Holy Eucharist is truly and substantially the body, blood, soul, and divinity of our Lord Jesus Christ.