Which one do you have in mind?
It's called a fancy Latin name, the Johannine Comma. Here's a link to Wikipedia's article if you're interested:
Johannine Comma - Wikipedia
What do you think happened?
It was orignally written in Hebrew and then translated into Greek. Then all the Hebrew copies got lost.
There are lots of clues, but I'll give you two. What we read as, "Amen, Faithful and True" would be AMN, AMN, AMN in Hebrew. You can't produce a result in Greek or English like that. In Hebrew, the words for virgin and city are similar since cities had walls around them and virgins were protected by wall. It doesn't seem like a coincidence then that the Holy City is also described as a pure bride.
Revelation 21:2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a
bride adorned for her husband.
That same kind of word play is found in some of the prophets too.
Jeremiah 1:11 Moreover the word of the Lord came unto me, saying, Jeremiah, what seest thou? And I said, I see a rod of an almond tree <shaqed>.
12 Then said the Lord unto me, Thou hast well seen: for I will hasten <shaqad> my word to perform it.
Since the original Hebrew wouldn't have had vowels, they'd be same letters. I learned that reading Maimonides -- not by my own hard work.
My biggest question about Revelation is if the rider on the white horse had a bow or a rainbow. If it was written in Hebrew, translators would have had to decide which one it was. I can live with that little problem.
My guess is that the variations were the result of being translated; and sometimes people make notes in books and whoever's copying them doesn't know if they're part of the book (that got left out when the former person copied them) and got added in the margins meaning they should be, or if they're just notes.
You may believe that you're not upset, but the troll doesn't see it that way, especially when one begins to troll the trolls themselves. Then they see that you're hooked. Again, you may not believe it, but a troll that posts blatant inflammatory remarks is quite simply tolling the bottom of the cesspool. Anyone who responds is necessarily hooked. When they post one logical fallacy after another, there's no point in responding because there is no debate or discussion, then it's just two trolls talking past each other. Why bother? There is nothing redeeming about pointless snide remarks.
I think trolls like to upset people. Usually I do ignore them.
A good policy. It's ironic how skeptics will sneer at apologists, and derisively dismiss apologetics as if they can't be valid. They don't seem to have the same policy when it comes to their cherished theories which are all "settled science".
The people who get the most upset by people disagreeing with them are usually the shakiest about themselves. They'd feel better about their ideas if everyone else agreed with them. If you disagree with them, it shakes their faith in what they believe. I've seen people who were fanatics, on fire about this or that, who later became skeptics or atheists. They would put down other people who disagreed as if they were so sure about things, only to fall apart suddenly later.