Our English translations of the Bible are considered inspired insofar as they are an accurate version of the original.
Are our early manuscripts, written on parchment in Hebrew or Greek identical with the originals? Or is it possible that mistakes have crept in while copyists were transcribing? The Church has always had charge of the Bible and which claims the infallible guidance of God, assures us that there has been no substantial change or error which would affect faith or morals. But though we might well expect divine protection to this extent, it is not to be supposed that a tired and drowsy transcriber may have slipped up on an inconsequential word here and there, or even that somebody may have deliberately introduced an unimportant change now and again.
It did happen that occasionally a copyist, conceiving what he believed to be a bright and pious thought, would write it on the margin of the manuscript. This is called a “marginal gloss.” Then it might happen that a hundred years later another scribe, copying from the “glossed” copy, would transfer the gloss to the text itself.
Some ancient manuscripts, though they are not among the oldest have this reading immediately following the “Lord’s Prayer”: “For Thine is the kingdom and the power and the glory forever. Amen.” A beautiful sentiment, but not the words of Christ! St. Jerome, who translated the Bible in the fourth century, does not have this quotation, and it was never in the Catholic Bible. The Protestant Revised Standard Version Bible, 1952, eliminated it, hereby indicating that non-Catholic scholars have come to the conclusion that the words were in reality a gloss. The bottom line in all this is that the Catholic Church has protected the Bible down through the centuries and we can rely on the authority of the Holy See, when she states that an authorized translation of the Bible is faithful in faith and morals.