I believe his message is clear. If he wanted us to believe it was symbolic I believe he would of told us so.
I politely disagree. He said something similar to the Samaritan woman and gave no indication that it was symbolic either. I believe He gave a hint to what He meant in John 4 in His message to the Samaritan woman.
“Jesus answered and said to her, “Everyone who drinks of this water will thirst again; but whoever drinks of the water that I will give him shall never thirst; but the water that I will give him will become in him a well of water springing up to eternal life.””
John 4:13-14 NASB1995
Very similar to what He said about His blood in John 6.
“But He said to them, “I have food to eat that you do not know about.” So the disciples were saying to one another, “No one brought Him anything to eat, did he?” Jesus *said to them, “
My food is to do the will of Him who sent Me and to accomplish His work. Do you not say, ‘There are yet four months, and then comes the harvest’? Behold, I say to you, lift up your eyes and look on the fields, that they are white for harvest. Already he who reaps is receiving wages and is gathering fruit for life eternal; so that he who sows and he who reaps may rejoice together. For in this case the saying is true, ‘One sows and another reaps.’ I sent you to reap that for which you have not labored; others have labored and you have entered into their labor.””
John 4:32-38 NASB1995
Notice the similarity in the message but in the case of the Samaritan woman He didn’t use the example of bread or His blood. The food is symbolic for His desire to do The Father’s will.
“Do not work 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 the Father, God, has set His seal.” Therefore they said to Him, “What shall we do, so that we may work the works of God?” Jesus answered and said to them, “This is the work of God, that you believe in Him whom He has sent.” So they said to Him, “What then do You do for a sign, so that we may see, and believe You? What work do You perform? Our fathers ate the manna in the wilderness; as it is written, ‘He gave them bread out of heaven to eat.’ ” Jesus then said to them, “Truly, truly, I say to you, it is not Moses who has given you the bread out of heaven, but it is My Father who gives you the true bread out of heaven. For the bread of God is that which comes down out of heaven, and gives life to the world.” Then they said to Him, “Lord, always give us this bread.” Jesus said to them, “I am the bread of life; he who comes to Me will not hunger, and he who believes in Me will never thirst.”
John 6:27-35 NASB1995
These two messages are strikingly similar yet they do not both refer to bread and wine. Another thing, if Jesus was speaking literally then that would mean that everyone who received the Eucharist would have to be saved. But this can’t be true because we know from Paul that anyone who receives it in worthily is actually cursed. Surely we all know that many people have received the Eucharist who do not have Christ abiding in them. Italian mafia members are notorious for this in their attempts to act as sheep in wolf’s clothing to avoid suspicion. So if Jesus was speaking literally then these men would have to receive eternal life. This is typically where people will begin to waiver in their claim that He was speaking literally and claim that not all His statements were meant to be taken literally in John 6. Judas received the Eucharist from Christ Himself and we all know that he is condemned. On the very night in the upper room when He specifically stated “this is My body, this is My blood” in Luke 22 He had this to say about Judas.
“I do not speak of all of you. I know the ones I have chosen;
but it is that the Scripture may be fulfilled, ‘He who eats My bread has lifted up his heel against Me.’ From now on I am telling you before it comes to pass, so that when it does occur, you may believe that I am He. Truly, truly, I say to you, he who receives whomever I send receives Me; and he who receives Me receives Him who sent Me.””
John 13:18-20 NASB1995
Judas ate the bread, he received the Eucharist just like the rest of the 12 but like I said if Jesus was speaking literally in John 6 then Judas must be saved. The problem is, we know that he is not because he did not believe.