There were those who believed in Him in a real sense, and they were the same who believed in His Real Presence in the Eucharist. Climate change opponents sometimes call it 'global warmening.' A minority of Christians today disbelieve in the Real Presence of Christ in the Eucharist. And none of them think that Christ is 'kept in a box,' anymore than climate change proponents would call it 'global warmening.'
You have all Christians from just after the Apostolic age onward, until the 1500s, being idolaters. I have trouble believing that, not because humans are incapable of error, but because it makes Christ and His Apostles virtually complete failures in building the Church.
Acts 17:29-30 KJV
(29) Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device.
(30)
And the times of this ignorance God winked at; but now commandeth all men every where to repent:
If the Godhead is not like unto gold, or silver, or stone... why should it be bread? The very nature of idolatry is to claim that the thing itself is actually a god. This bread, can it speak? or is it another
dumb idol?
1 Corinthians 12:1-2 KJV
(1) Now concerning spiritual gifts, brethren, I would not have you ignorant.
(2)
Ye know that ye were Gentiles, carried away unto these dumb idols, even as ye were led.
Speaking plainly, "worship of physical objects must not be idolatry because the Roman church says it is not" is not a good argument. The entire Roman system is not the church Christ created, which should be obvious from its intrinsic structure. Jesus did not come to institute Popes and priests to intercede between God and the people: that's precisely what he did away with.
In the Old Testament there was a temple, and only priests were allowed in that temple. There was also a special Holy place that only the High Priest could enter therein once a year. That veil was torn asunder and that temple was destroyed. Gone is the Levitical priesthood, replaced by Jesus our High Priest. Within the church that Jesus ordained there is no laity: the body of Christ are priests unto God without need for further intercession.
1 Peter 2:5-9 KJV
(5)
Ye also, as lively stones, are built up a spiritual house,
an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ.
(6) Wherefore also it is contained in the scripture, Behold, I lay in Sion a chief corner stone, elect, precious: and he that believeth on him shall not be confounded.
(7) Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner,
(8) And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were appointed.
(9)
But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light:
A system of control that establishes its own priesthood with power over the laity is the definition of Nicolaitan (power over laity) which Jesus specifically called out in when he spoke to the churches in Revelation 2:6 & 15. The church described by Peter has no laity.
The Eucharist also resembles the feeding of the 5000. A very small amount of food fed very many people.
If the Eucharist were merely a ritual of distributing a small amount of food to feed many and used to teach the feeding of the five thousand that would be perfectly acceptable. The problem arises as you told me that the wafer is literally worshiped.
I say let this idol be put to the same test that God subjected all other idols. Let it be torn down, destroyed, even burnt. If it be God then it can defend itself. But we already know what would happen (this has been done before, as it not?) A a dumb idol it can neither hear nor speak.
Which is one reason why we believe that the second part of John chapter six concerns the Eucharist. The point was that the whole entire Church were idolaters according to your view, up until the Reformers saved the day. That view imo beggars belief, because it would make the Apostles virtually complete failures.
The apostles can hardly be faulted for false teachers later coming among the people - Jesus prophesied as much. Nor can they be faulted for the fulfillment of prophecy in other regards. There's another woman in Revelation which fits the Roman description very aptly as well.
The doctrine of the Real Presence makes adoring the Eucharist not idolatry, unless that doctrine is error.
If the doctrine of the Real Presence is error, then adoring the Eucharist is idolatry, we're agreed on that conditional premise. We disagree that the antecedent is true.
Worshiping bread.
If you were to ask me "Did God physically manifest Himself in the flesh" I could point to multiple passages to demonstrate that yes, He did, because it is clearly stated in the first chapter of the gospel of John and 1 Timothy 3:16.
1 Timothy 3:16 KJV
(16) And without controversy great is the mystery of godliness:
God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
In comparison, there is absolutely no scripture that says "Great is the mystery of Godliness:
God was manifest in the bread, consumed of saints, distributed by the priests, consumed by among the laity, believed on in the world."
We never disagreed on that.
If and only if the Real Presence is "specifically against what God has warned us about," and "superstition."
The only dispute about the Real Presence mentioned in antiquity was between the bishops who taught it, and those who taught that Christ hadn't come in the flesh.
John 4:23-24 KJV
(23) But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him.
(24)
God is a Spirit: and they that worship him
must worship him in spirit and in truth.
Not "God is now bread" and they which worship him must worship the bread.
And before you go further trying to establish that it must be right because the Catholic church must be the church Jesus made, you might want to make a comparison of the attributes of that church against the description in Revelation 17.