Mankind tends to change things based on societal norms and the custom of the times, we see that today in the latest version of the NIV - Gender Neutral. We are also seeing homosexuality take firm root in society and now we have the Queen James homosexual bible.
So called "Christians" are changing the "word of God" to fit their needs. Do you think it's possible that happened back in the time of the wriiting of the bible? Is it possible that some of the older writings that you say are more accurate are possibly corruptions of the gnostics because from what I've studied about the gnostics, their terminology was almost a word for word match to the real McCoy... the only difference is their Christ was not the real Christ.
Do I think the dropping off of a sigma by accident, or adding "the Lord" to Jesus conflating it was gnosticism? Of course not! In fact, probably the longer ending of Mark is the only text I can think of that actually creates doctrine that is not there, and not even it is gnostic.
So, where are you finding gnosticism in modern Bibles, anyway? I've read most modern Bibles, the NASB 25 times, HCSB 4 times, NIV 3 times, ESV 8 times, etc, etc, I've even read the NLT (found some things that were just a bit too far from the other Bibles) and most of the Message (way too far, but still some interesting insight, and certainly not gnostic.)
The only time I find gnosticism is when people claim that we are gods, etc, (Word Faith)and they always quote the KJV. Now, I'm not blaming the KJV, but the fact is, being more difficult to understand, heresies are going to arise because the words are not in understandable modern English. In fact, I think certain cults (JWs,and Mormans) actually rely on the fact that the KJV is not accessible to modern people, and use it to try and support their cultic ideas. And seriously, the Mormons directly say there are no contradictions between the KJV and the book of Mormon. It took me 2 pages to find 4 contradictions, as a young Christian, and I had only read the Bible twice at that point.!
Further, what is your source for
So called "Christians" are changing the "word of God" to fit their needs
I've read so many versions and compared them to the Greek. I actually was assigned the KJV to compare to the Hebrew, when I took Hebrew. In no versions have I ever seen anyone "changing the Word of God" to fit their needs. Let alone the early versions being changed to fit gnosticism. Gnosticism was a heresy of the 2nd century, and in fact, was not that wide spread, tending only to certain educated and elite groups. I know I have read the myth of the Alexandrian school being gnostic, advanced by the KJV Onlyists. But, no one uses just one manuscript, there are 5 complete and distanced schools of Bible manuscripts - the Byzantine, the Western (Spain) Caesarian (Rome) Alexandrian; Egyptian and something called Eclectic.
Category I - Alexandrian
This category includes the earliest manuscripts. Some 4th century and earlier Papyri and uncials are in this category, as are manuscripts of the Alexandrian text-type.The manuscripts are important when considering textual problems and are considered by many scholars to be a good representation of the autography, due to their easy dating.
Category II - Egyptian
The manuscripts this category are similar to category I manuscripts and are important in textual consideration of the autograph. However, the texts usually contain some
alien influences, such as those found in Byzantine text-type. (NB ALIEN meaning the Byzantine influences are the issue!)
Category III - Eclectic
The manuscripts in category III are important when discussing the history of the textual traditions and to a lesser degree for establishing the original text. The manuscripts usually contain independent readings,and have a distinctive character. Manuscripts of this category usually present mixed or eclectic text-type.
Category IV - Western
Category I contains the few manuscripts that follow the text of the Codex Bezae (D).These texts are of the Western Text type.
Category V - Byzantine
Byzantine an mostly Byzantine texts fall under this category.
https://en.wikipedia.org/wiki/Categories_of_New_Testament_manuscripts
So, a variety of texts from a variety of places that are widely separated. Not likely the gnostics changed all those texts. They just weren't that big an influence on the church, and the sect was already in decline by the second century, plus the church (although it probably started there, influenced by Jewish and Greco-Roman mystery religions), but were found all over the Roman empire. It is just as likely the Byzantine texts were influenced by the gnostics as any other family, but in fact, I don't see any evidence of gnosticism in any of the Biblical manuscripts. I believe this is just another KJV Only straw man, created for the naive!
Plus, not capitalizing certain words in the NIV, for example, referring to the deity of Christ, does not point to gnosticism. In fact, the real difference in the gnostics didn't lie in the deity of Christ, but the opposite. They did think Christ was God but they were Docetists, believing Jesus did not actually die, because he had never been a man. So, over realizing of the deity of Christ - Gnostics thought matter was evil, and therefore, Jesus would never have had a real body. The exact opposite of the Arians, who thought that Jesus was only a man, and not God.
Perhaps you could give specific examples of where this happens in modern texts, and then we could compare to the Greek/Hebrew, and some modern versions. Methinks perhaps you have fallen for a straw man, here.