
The Quran makes it clear that those who love God will believe the Quran and those who are deaf and blind will reject it. The few people who believe the Quran believe it because it came from the Lord of all. It is obvious to those who do not worship things other than God.
Second, there are no errors. Only misunderstanding among readers. For example you believe the Quran includes Mary in the trinity but it doesn't. I'm not even sure how people believe that and it makes me skeptical when they say they have read the Quran but then believe that.
The Quran never includes Mary in the trinity. The Quran however does rightly note that many Christians take Mary as a deity as you can see with Catholic and Orthodox Christians.
The Table 5:116 And when God said, "O Jesus, son of Mary, did you say to the people, 'Take me and my mother as two gods besides God?' " He said, "Glory to You, it is not for me to say what I had no right to say. Had I said it, You would have known it. You know what is within myself, while I do not know what is within Yourself. You are the Knower of the unseen.
Read this carefully. It is not talking about the trinity but about deification.
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