You must learn to read more carefully: I have repeatedly said that the topic of Holy Communion is not addressed until 6:53-58, where the Eucharistic imagery of munching on (Greek: trogo") Jesus' flesh and drinking His blood is first introduced. The crudeness of "munching on" Jesus flesh is a clear reference to munching on Communion bread. Prior to 6:53-58, Jesus never refers to munching on "the bread of life" because the topic of Communion has not yet been taken up. I remind you that Jesus omits the topic of Communion in John's treatment of the Last Supper precisely because He addresses Holy Communion in John 6:53-58.
Since Jesus wasn't talking about communion before John 6:53-58, or after John 6:53-58 when He was talking to His disciples in explaining further His message, what makes you think He is talking about communion then, especially when the Jews had asked Him to give them that bread earlier?
Look at the verses that deters from the imagery that you say is about eating communion but it is really about His death on the cross in believing in Him. Better yet, let me show His answer to Nicodemus on how one is born again without water baptsm.
John 3:13 And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven. 14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: 15 That whosoever believeth in him should not perish, but have eternal life. 16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Now see the verses that Jesus defer from actual eating of this bread of life.
John 6:
47 Verily, verily, I say unto you, He that believeth on me hath everlasting life. 48 I am that bread of life. 49 Your fathers did eat manna in the wilderness, and are dead. 50 This is the bread which cometh down from heaven, that a man may eat thereof, and not die.
This is where He is talking about not the eating of the bread but believing in Him as that Bread of Life. He reiterates it again on how to receive that bread of life that the Jews had asked Him for and that is by believing in Him.
51 I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which
I will give for the life of the world. 52 The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?
Still stuck in their mindset of eating for which I believe next is His sarcasm for not believing in Him that He refers to His crucifixion.
53 Then Jesus said unto them, 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. 54 Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. 55 For my flesh is meat indeed, and my blood is drink indeed. 56 He that eateth my flesh, and drinketh my blood, dwelleth in me, and I in him. 57 As the living Father hath sent me, and I live by the Father: so he that eateth me, even he shall live by me. 58 This is that bread which came down from heaven:
not as your fathers did eat manna, and are dead: he that eateth of this bread shall live for ever.
You can know that is the actual message by how He had asked the question to His other disciples in regards to His ascension that had a hard time wrapping their heads around His words. But do note Jesus is NOT changing the subject as His reference to His ascension has nothing to do with communion for why His reference to His crucifixion was not. Jesus continued to taal about His hard sayings to His disciples about how the eating of teh flesh profits nothing, but it is His words that bring life by believing His words that coming to & believing in Him is how we are saved.
John 6:60 Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it? 61 When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?
62 What and if ye shall see the Son of man ascend up where he was before? 63 It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life. 64 But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him. 65 And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father. 66 From that time many of his disciples went back, and walked no more with him.
Anyone can come to communion including sinners that do not believe in Him and just follow the crowd to fit in. But no sinner can come to Him & believe in Him to fool God into saving that sinner, because they have to believe in Him to be saved.
You duck Jesus' teaching about the ongoing nature of the salvation process. How do we continue "to abide in Jesus?" Jesus replies that regular discerning partaking of Holy Communion is an essential aspect (so John 6:54-56, the meaning of which you continually evade.
Unfortunately, you are, but only God can show the truth in His words to deliver you from the lies of the Catholic Church that you do not belong to.
let's get deeper into the Word. Paul denies the once-for-all status as "new creations" in Christ Jesus (2 Cor. 5:17). Rather, he teaches, "Though the outer man perishes, the inner man is made new day by day (4:16)." It is this redemptive process that inspires Paul to confess, "I discipline my body and enslave it, lest having preached to others, I myself should be a reprobate (Greek: "adokimos") (2 Cor. 9:27). "Adokimos" implies "unsaved (so Rom. 1:28)." The uncertainty of the final divine verdict is implicit in Paul's stress on the salvation process, and so, he warns that you must "work out your own salvation in fear and trembling (Phil. 2:13). "Fear and trembling" is advisable because of the danger of self-delusion about whether the salvation process continues on the right course.
Paul also written by the Holy Spirit 1 Corinthians 3:10-17 where that foundation which was laid by Jesus Christ can never be removed but the works on it that denies Him and defiles the temple of God will be removed in that day. The judgment of whether or not believers abiding in Him to be received as that vessel unto honor in His House from those left behind as reprobates in becoming those vessels unto dishonor in His House is what that running that race is for which is why even former believers are called to depart from iniquity 2 Timothy 2:18-21
If believers run that race believing they are not saved yet as if the seal of adoption in them & that foundation laid by Jesus Christ can be removed, then by their dead works in running that race, they are denying Him as their Savior and risk being denied by Him & left behind albeit saved.
We are saved but we are to go onward to perfection and right now those who believe they are not saved yet, are denying the joy of their salvation that sinners has to wonder why Jesus Christ is the Good News to man.