One book (The Quran) only

Idol worship, or associating partners with Allah , is the only unforgivable sin that is mentioned in the Quran. Yet, it seems that for the majority of us, our minds cannot accept Allah Alone!.

[4:48] “Allah DOES NOT FORGIVE that partners be established with Him, but He forgives other than that to whom He wishes”

And the ultimate test can only be:

[39:45] “When The God (Allah) ALONE is mentioned, the hearts of those who do not believe in the hereafter shrink with aversion. But when idols are mentioned besides Him, they rejoice.”

Did talking about upholding the Quran Alone bother you?. Or does your heart really believe?

[39:18] “They are the ones who examine all words, then follow the best. These are the ones whom GOD (Allah) has guided; these are the ones who possess intelligence.”