The Bible continues to record, "The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?" John 6:52
Christianity, even today, continues to be as confused as the Jews were when Jesus spake these words. They are still continuing to misrepresent what Jesus really meant by these words. Those false leaders of Christianity continue to teach that Jesus, the son of the virgin Mary, is in fact the "WORD" which came down from heaven (sky). They forget that Jesus said, "the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works." John 14:10
Jesus said further, "He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father's which sent me." John 14: 24
The "WORD", which was God (see John 1:1), entered into the body of the son (see John 1:14) of the virgin Mary at his baptism in the river Jordan. That "WORD", which was God, was the source of the words that said, "I am that bread of life". It was the Father that dwelled in him, that spake those words.
Apostle Paul clarified this when he said, "For it is written, I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent. Where is the wise? where is the scribe? Where is the disputer of this world? hath not God made foolish the wisdom of this world?
"For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe. For the Jews require a sign, and the Greeks seek after wisdom: But we preach Christ crucified, unto the Jews a stumbling block, and unto the Greeks foolishness; but unto them which are called, both Jews and Greeks, Christ the power of God, and the wisdom of God. Because the foolishness of God is wiser than men; and the weakness of God is stronger than men.
"For ye see your calling, brethren, how that not many wise men after the flesh, not many mighty, not
many noble, are called: but God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty; and base things of the world, and things which are despised, hath God chosen, yea, and things which are not, to bring to nought things that are: That no flesh should glory in his presence." I Corinthians 1:19-29
So it was, when Jesus said, "I am that bread of life". This was written to confound those that would attempt to understand the words of the Bible without the indwelling Spirit of God, which is the Holy Ghost. They could only attempt to understand the scriptures by their carnal minds, which were enmity to God and not subject to the law of God, neither indeed could be. (see Romans 8:7)
Jesus went on to explain to those which were called, and could understand, "Verily, verily, I say unto you, Except ye eat the flesh of the son of man, and drink his blood, ye have no life in you. Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.
"For my flesh is meat indeed, and my blood is drink indeed. He that eateth my flesh, and drinketh my blood, dwelleth in me and I in him. As the living Father hath sent me, and I live by the Father: so he that eateth me, even he shall live by me (by my example).
This is that bread which came down from heaven (sky): not as your fathers did eat manna, and are dead: he that eateth of this bread shall live for ever." John 6:53-58
Jesus also said, "It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God." Matthew 4:4
Many in Christianity discount the "Old Testament" in direct opposition to these words of Jesus Christ himself. They teach the "Old Testament" applies only to the Jews and has no application to the church of today. These false Christians fail to take heed of the words of the "New Testament" which they agree does apply to the church of today.
They ignore the admonition of Apostle Paul when he said, "All scripture (Old and New Testament) is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: that the man of God may be perfect, throughly furnished unto all good works."
The "Bread of Life" is the "Word of God", and includes the entire Bible from Genesis 1:1 through Revelation 22:21.