6:109 And they swear by Allah their strongest oaths that if a sign came to them, they would surely believe in it.
Say, “The signs are only with Allah.”
And what will make you perceive that even if a sign came, they would not believe
110 And We will turn away their hearts and their eyes just as they refused to believe in it the first time.
And We will leave them in their transgression, wandering blindly.
Koran 6:109-110
Muhammad spoke about Allah in the third person. This means this passage is not the perfect words of the perfect Qur’an from perfect Allah. Thus, Allah is false, imaginary, and fictional, which means Islamic doctrine and Islam are nonsensical and false.
Muhammad commits shirk with: “We”, “Us” or “Our”, placing Allah as a companion to himself, showing that Allah is incoherent, imaginary, and fictional, and so Islam is incoherent with monotheism, thus Islam is contradictory and false.
Muhammad Allah commands Muhammad to: “Say” or “Recite”. This means that this passage is addressed to Muhammad, not to all people. Thus, this passage can’t be in the perfect words of the perfect Qur’an from perfect Allah. As it is addressed to Muhammad, in his time and place, his context, this also means that this passage is locked to Muhammad’s context and can’t be in the context-free, perfect Qur’an from perfect Allah with all its perfect words. Thus, this passage is part of Muhammad’s recitation, Muhammad’s Koran, which means Islamic doctrine and Islam are incoherent and false, meaning Allah is incoherent, imaginary, fictional, and false.
The anonymous “they” is revealed in Tafsir Ibn Kathir 6:109-110 as:
…the idolaters [pagan Quraysh] swore their strongest oaths by Allah…
Tafsir Ibn Kathir 6:109-110
The idolaters, the pagan Quraysh, the tribe Muhammad was cast out from, who already worshipped Allah, Al Lah, Lat, Uzza and Manat and the many other idols and who swore by Allah:

Muhammad continues describing the actions of “disbelievers” and “idolaters”: “if a sign came to them, they would surely believe in it.” This would be entirely true, as this would confirm their pagan religion and worship of Al Lah, Lat, Uzza and Manat. Worse, describing the actions of pagans and their oaths shouldn’t be in the perfect words of the perfect Qur’an from perfect Allah, thus showing that this passage comes from Muhammad (and friends) and is for Muhammad’s recitation, Muhammad’s Koran, thus making Allah incoherent, false, fictional and imaginary. This means Islamic doctrine and Islam are nonsensical and false.
Muhammad admits and tells himself to say: “The signs are only with Allah.” This means Allah has no power, as idols do not have power, except what Muhammad and the Quraysh already gave them.
Muhammad lied: “And what will make you perceive that even if a sign came, they would not believe.” Muhammad knows he can’t produce a sign and knows that Allah, the stone idol, can’t produce a sign. This sentence is Muhammad’s excuse, even after the Quraysh already made an oath on Allah the idol they already worship to believe in the sign coming from Muhammad.
Muhammad places a stone idol, Al Lah, beside himself: “And We will turn away their hearts and their eyes just as they refused to believe in it the first time.” Muhammad already knew that his god couldn’t produce signs. This is quite correct as stone idols don’t produce signs. So, Muhammad, the liar, assumes that the Quraysh are also liars, like himself.
Muhammad gives up: “And We will leave them in their transgression, wandering blindly”, while also committing shirk yet again. This is Muhammad abandoning his role of prophet, messenger, warner, and notifier, and showing his laziness, and the inaction of his dead, broken stone idol, Allah.

Muhammad’s shirk, admissions, lies and laziness show that the best replacement for this passage is: “”, the empty sentence.

[…] Qur’an 6:109-110 […]
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