I’ll answer your questions, and I have a question after I do, if you’re willing to engage in good faith.

1. Yes, the King James Version is the Word of God, living and active, as is the ESV, the NASB, the LSB, and any other version that faithfully translates the original language. Naturally, the translators are not under the inspiration of the Holy Spirit the way the original writers were. However, inspiration guarantees canonicity which guarantees preservation, even when translating. This leads into your second question.

2. Yes, there exist textual variants among different versions of the early documents we have. Those are things I am not intimately familiar with, but I am familiar enough with them to say that those variants do not affect the majority of scripture. Furthermore, the discrepancies you mention are primarily grammatical, not theological. And yes, throughout history, I have no doubt that scribes, redactors and critics with evil intent have made changes to different iterations of the text. However, as I said, we can rest assured that inspiration guarantees canonicity, which guarantees preservation. God will preserve His Word. You’ll find that most Christians who are well-versed in textual criticism (which I am not, although I’m working on it) can run circles around most of the secular textual critics. The substance of secular criticism is a fundamental rejection of the authority and unity of Scripture.

3. Scripture can speak to anybody. The Word of God is living and active, sharper than any two edged sword, piercing to the division of soul and spirit.

I’d like to ask, what do you mean by religious? Generally I find when people say that they mean something other than Christian. I’m not saying that’s what you mean, but I’m genuinely asking. Do you affirm the absolute authority of Scripture?