That is probably not surprising, since the Qur'an contains the following verses about it:
4:171. O People of the Book! Commit no excesses in your religion: nor say of God aught but the Truth. Jesus the (human) son of Mary was (no more than) an Apostle of God; and His Word (
John 1:14), which He bestowed on Mary's (human) son; was a spirit-Being (Christ) proceeding from Him (making the human+Being called Jesus+Christ): so believe God and His Apostles. Say NOT "Trinity": DESIST: it will be better for you: for "I AM" is one God. Glory be to Him: (far exalted is He) above having a human son. To Him belong all things in the heavens and on earth. And enough is God as a Disposer of affairs.
5:75. They do blaspheme who say: "("I AM") is Jesus the son of Mary." But said Christ: "O Children of Israel! Worship God, my Lord and your Lord." Whoever joins other gods with God,- "I AM" will forbid him the Garden, and the Fire will be his abode. There will for the wrong-doers be no one to help.
5:76. They do blaspheme who say: "I AM" is one of three in a Trinity: for there is no god except One God. If they desist not from their word (of blasphemy), verily a grievous Penalty will befall the blasphemers among them.
37:151. Is it not that they say, from their own invention,
37:152. "("I AM") has begotten (human) children"? but they are liars!
37:153. Did He (then) choose daughters rather than sons?
37:154. What is the matter with you? How judge ye?
37:155. Will ye not then receive Warning?
37:156. Or have ye an authority to manifest?
37:157. Then bring ye your Book (of authority) if ye be truthful!
37:158.
And they have invented a BLOOD-relationship between Him and the Beings: but the Beings know (quite well) that they [like Him are SPIRIT and] have indeed to appear (before His Judgment-Seat)!
37:159. Glory to "I AM"! (He is free) from the things they ascribe (to Him)!
37:160. Not (so, do) the sincere and devoted Servants of "I AM".
That is a pretty stern warning being given. We know, that the Church of Rome has done this and more. But, even before the Koran was written, there were already the warnings from Christ, in the Revelation:
17:18 And the woman which thou sawest is that great CITY, which reigneth over the kings of the earth (Rome).
18:1 And after these things I saw another angel come down from heaven, having great power; and the earth was Lightened with his glory (
Matt. 24:27;
Luke 17:24).
18:2 And he cried mightily with a strong voice, saying, Babylon (the City of Merchants - Market System) the great is fallen, is fallen, and is become the habitation of devils (liars), and the hold of every foul spirit, and a cage of every unclean and hateful bird.
18:3 For all nations have drunk of the wine of the wrath of her fornication, and the kings of the earth have committed fornication with her, and the merchants of the earth are waxed rich through the abundance of her delicacies.
18:4 And I heard another voice from heaven, saying, COME OUT of her, MY people, that ye take not part in her sins, and that ye receive not of her plagues (punishment).
(Above quotes are from the "King of kings' Bible".)
Thank you, and yes, the analogy you provided is certainly simple enough to follow through. I think it also serves to describe the problem, that of men wanting to put down those "pegs" (creeds), especially it shows how they do not lead up, but instead became a process of actually leading away from the true doctrine... that was already given and is complete - the Scripture itself!
You mentioned about the church men wanting to prevent heresies, which can certainly be a correct statement, I think as long as we understand correctly that heresy was always seen as being a departure from any of the official doctrinal stances ("pegs") of the Church. Remember, the Pope has always been seen by the church as being the "vicar" of Christ. Vicar meaning "substitute". (and it gets much, much worse from there on out).. As far as I'm aware, most if not all of the reformers agreed upon the position that the papacy was either seen as clearly being the anti-christ (or at least, an anti-christ).
(As Christian Pinto I believe mentioned in the film, A Lamp in The Dark, or in its sequel)
So... the papacy and the popes are seen by the Church as being the "substitute of Christ". And if anyone disagreed with them, and their (supposed) "authority" (which is therefore
total), and any such person became enough of a nuisance for them to be seen as a potential threat.. the church would declare them to be a heretic through the issuing of "anathemas" by the Church (which many of were contained in the earlier creeds) and at risk of being excommunicated, if not something worse.
I guess my point of view, if using your analogy about the pegs, is that is really illustrating the whole problem humanity has had! Wanting to build it's own (always diverging) doctrines, to then place on top of the actual doctrine, of the revealed Scripture itself.